diff --git a/parallel-lint b/parallel-lint
index cb320718..9b6ac4f3 100755
--- a/parallel-lint
+++ b/parallel-lint
@@ -1,4 +1,63 @@
 #!/usr/bin/env php
 <?php
 
-require __DIR__ . '/parallel-lint.php';
+/*
+Copyright (c) 2014, Jakub Onderka
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+The views and conclusions contained in the software and documentation are those
+of the authors and should not be interpreted as representing official policies,
+either expressed or implied, of the FreeBSD Project.
+ */
+
+if (!defined('PHP_VERSION_ID') || PHP_VERSION_ID < 50400) {
+    echo "PHP Parallel Lint require PHP 5.4.0 or newer.", PHP_EOL;
+    die(255);
+}
+
+$autoloadLocations = [
+    getcwd() . '/vendor/autoload.php',
+    getcwd() . '/../../autoload.php',
+    __DIR__ . '/../vendor/autoload.php',
+    __DIR__ . '/../../../autoload.php',
+];
+
+$loaded = false;
+foreach ($autoloadLocations as $autoload) {
+    if (is_file($autoload)) {
+        require_once($autoload);
+        $loaded = true;
+    }
+}
+
+if (!$loaded) {
+    fwrite(STDERR,
+        'You must set up the project dependencies, run the following commands:' . PHP_EOL .
+        'curl -s http://getcomposer.org/installer | php' . PHP_EOL .
+        'php composer.phar install' . PHP_EOL
+    );
+    exit(255);
+}
+
+$app = new JakubOnderka\PhpParallelLint\Application();
+$app->run();
diff --git a/parallel-lint.php b/parallel-lint.php
deleted file mode 100644
index ee0e5dbf..00000000
--- a/parallel-lint.php
+++ /dev/null
@@ -1,129 +0,0 @@
-<?php
-use JakubOnderka\PhpParallelLint;
-
-if (!defined('PHP_VERSION_ID') || PHP_VERSION_ID < 50400) {
-    echo "PHP Parallel Lint require PHP 5.4.0 or newer.", PHP_EOL;
-    die(255);
-}
-
-const VERSION = '1.0.0',
-    SUCCESS = 0,
-    WITH_ERRORS = 1,
-    FAILED = 255;
-
-if (in_array('proc_open', explode(',', ini_get('disable_functions')))) {
-    echo "Function 'proc_open' is required, but it is disabled by disable_functions setting.", PHP_EOL;
-    die(FAILED);
-}
-
-function showOptions()
-{
-?>
-Options:
-    -p <php>        Specify PHP-CGI executable to run (default: 'php').
-    -s, --short     Set short_open_tag to On (default: Off).
-    -a, -asp        Set asp_tags to On (default: Off).
-    -e <ext>        Check only files with selected extensions separated by comma.
-                    (default: php,php3,php4,php5,phtml,phpt)
-    --exclude       Exclude a file or directory. If you want exclude multiple items,
-                    use multiple exclude parameters.
-    -j <num>        Run <num> jobs in parallel (default: 10).
-    --colors        Enable colors in console output. (disables auto detection of color support)
-    --no-colors     Disable colors in console output.
-    --no-progress   Disable progress in console output.
-    --json          Output results as JSON string.
-    --checkstyle    Output results as Checkstyle XML.
-    --blame         Try to show git blame for row with error.
-    --git <git>     Path to Git executable to show blame message (default: 'git').
-    --stdin         Load files and folder to test from standard input.
-    --ignore-fails  Ignore failed tests.
-    -h, --help      Print this help.
-    -V, --version   Display this application version
-<?php
-}
-
-function showVersion()
-{
-    echo 'PHP Parallel Lint version ' . VERSION . PHP_EOL;
-}
-
-function showUsage()
-{
-    showVersion();
-    ?>
--------------------------------
-Usage:
-    parallel-lint [sa] [-p php] [-e ext] [-j num] [--exclude dir] [files or directories]
-
-<?php
-showOptions();
-die();
-}
-
-if (in_array('-h', $_SERVER['argv']) || in_array('--help', $_SERVER['argv'])) {
-    showUsage();
-}
-
-if (in_array('-V', $_SERVER['argv']) || in_array('--version', $_SERVER['argv'])) {
-    showVersion();
-    die();
-}
-
-$files = array(
-    __DIR__ . '/../../autoload.php',
-    __DIR__ . '/vendor/autoload.php'
-);
-
-$autoloadFileFound = false;
-foreach ($files as $file) {
-    if (file_exists($file)) {
-        require $file;
-        $autoloadFileFound = true;
-        break;
-    }
-}
-
-if (!$autoloadFileFound) {
-    echo 'You need to set up the project dependencies using the following commands:' . PHP_EOL .
-        'curl -s https://getcomposer.org/installer | php' . PHP_EOL .
-        'php composer.phar install' . PHP_EOL;
-    die(FAILED);
-}
-
-try {
-    $settings = PhpParallelLint\Settings::parseArguments($_SERVER['argv']);
-
-    if ($settings->stdin) {
-        $settings->addPaths(PhpParallelLint\Settings::getPathsFromStdIn());
-    }
-
-    if (empty($settings->paths)) {
-        showUsage();
-    }
-
-    $manager = new PhpParallelLint\Manager;
-    $result = $manager->run($settings);
-
-    if ($settings->ignoreFails) {
-        die($result->hasSyntaxError() ? WITH_ERRORS : SUCCESS);
-    } else {
-        die($result->hasError() ? WITH_ERRORS : SUCCESS);
-    }
-
-} catch (PhpParallelLint\InvalidArgumentException $e) {
-    echo "Invalid option {$e->getArgument()}", PHP_EOL, PHP_EOL;
-    showOptions();
-    die(FAILED);
-
-} catch (PhpParallelLint\Exception $e) {
-    if (isset($settings) && $settings->format === PhpParallelLint\Settings::FORMAT_JSON) {
-        echo json_encode($e);
-    } else {
-        echo $e->getMessage(), PHP_EOL;
-    }
-    die(FAILED);
-
-} catch (Exception $e) {
-    echo $e->getMessage(), PHP_EOL;
-    die(FAILED);
-}
diff --git a/src/Application.php b/src/Application.php
new file mode 100644
index 00000000..3833fef7
--- /dev/null
+++ b/src/Application.php
@@ -0,0 +1,146 @@
+<?php
+
+namespace JakubOnderka\PhpParallelLint;
+
+/*
+Copyright (c) 2014, Jakub Onderka
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+The views and conclusions contained in the software and documentation are those
+of the authors and should not be interpreted as representing official policies,
+either expressed or implied, of the FreeBSD Project.
+ */
+
+/**
+ * Class Application
+ * @package JakubOnderka\PhpParallelLint
+ */
+class Application
+{
+    const VERSION = '1.0.0';
+    const SUCCESS = 0;
+    const WITH_ERRORS = 1;
+    const FAILED = 255;
+
+    /**
+     * Run the application
+     */
+    public function run()
+    {
+        if (in_array('proc_open', explode(',', ini_get('disable_functions')))) {
+            echo "Function 'proc_open' is required, but it is disabled by disable_functions setting.", PHP_EOL;
+            die(self::FAILED);
+        }
+        if (in_array('-h', $_SERVER['argv']) || in_array('--help', $_SERVER['argv'])) {
+            $this->showUsage();
+        }
+        if (in_array('-V', $_SERVER['argv']) || in_array('--version', $_SERVER['argv'])) {
+            $this->showVersion();
+            die();
+        }
+        try {
+            $settings = Settings::parseArguments($_SERVER['argv']);
+            if ($settings->stdin) {
+                $settings->addPaths(Settings::getPathsFromStdIn());
+            }
+            if (empty($settings->paths)) {
+                $this->showUsage();
+            }
+            $manager = new Manager;
+            $result = $manager->run($settings);
+            if ($settings->ignoreFails) {
+                die($result->hasSyntaxError() ? self::WITH_ERRORS : self::SUCCESS);
+            } else {
+                die($result->hasError() ? self::WITH_ERRORS : self::SUCCESS);
+            }
+        } catch (InvalidArgumentException $e) {
+            echo "Invalid option {$e->getArgument()}", PHP_EOL, PHP_EOL;
+            $this->showOptions();
+            die(self::FAILED);
+        } catch (Exception $e) {
+            if (isset($settings) && $settings->format === Settings::FORMAT_JSON) {
+                echo json_encode($e);
+            } else {
+                echo $e->getMessage(), PHP_EOL;
+            }
+            die(self::FAILED);
+        } catch (Exception $e) {
+            echo $e->getMessage(), PHP_EOL;
+            die(self::FAILED);
+        }
+    }
+
+    /**
+     * Outputs the options
+     */
+    private function showOptions()
+    {
+        echo <<<HELP
+Options:
+    -p <php>        Specify PHP-CGI executable to run (default: 'php').
+    -s, --short     Set short_open_tag to On (default: Off).
+    -a, -asp        Set asp_tags to On (default: Off).
+    -e <ext>        Check only files with selected extensions separated by comma.
+                    (default: php,php3,php4,php5,phtml,phpt)
+    --exclude       Exclude a file or directory. If you want exclude multiple items,
+                    use multiple exclude parameters.
+    -j <num>        Run <num> jobs in parallel (default: 10).
+    --colors        Enable colors in console output. (disables auto detection of color support)
+    --no-colors     Disable colors in console output.
+    --no-progress   Disable progress in console output.
+    --json          Output results as JSON string.
+    --checkstyle    Output results as Checkstyle XML.
+    --blame         Try to show git blame for row with error.
+    --git <git>     Path to Git executable to show blame message (default: 'git').
+    --stdin         Load files and folder to test from standard input.
+    --ignore-fails  Ignore failed tests.
+    -h, --help      Print this help.
+    -V, --version   Display this application version
+
+HELP;
+    }
+
+    /**
+     * Outputs the current version
+     */
+    private function showVersion()
+    {
+        echo 'PHP Parallel Lint version ' . self::VERSION.PHP_EOL;
+    }
+
+    /**
+     * Shows usage
+     */
+    private function showUsage()
+    {
+        $this->showVersion();
+        echo <<<USAGE
+-------------------------------
+Usage:
+parallel-lint [sa] [-p php] [-e ext] [-j num] [--exclude dir] [files or directories]
+
+USAGE;
+        $this->showOptions();
+        die();
+    }
+}