Add codesniffer ruleset

.travis.yml

@@ -46,7 +46,7 @@ before_script:
 script:
   - if [[ $PHPUNIT_TEST ]]; then vendor/bin/phpunit; fi
   - if [[ $PHPUNIT_COVERAGE_TEST ]]; then phpdbg -qrr vendor/bin/phpunit --coverage-clover=coverage.xml; fi
-  - if [[ $PHPCS_TEST ]]; then vendor/bin/phpcs --standard=vendor/silverstripe/framework/phpcs.xml.dist src tests *.php --ignore=host-map.php; fi
+  - if [[ $PHPCS_TEST ]]; then vendor/bin/phpcs src tests *.php --ignore=host-map.php; fi
   - if [[ $BEHAT_TEST ]]; then vendor/bin/behat @subsites; fi
 
 after_success:

phpcs.xml.dist

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ruleset name="SilverStripe">
+    <description>CodeSniffer ruleset for SilverStripe coding conventions.</description>
+
+    <!-- base rules are PSR-2 -->
+    <rule ref="PSR2" >
+        <!-- Current exclusions -->
+        <exclude name="PSR1.Methods.CamelCapsMethodName" />
+        <exclude name="PSR1.Files.SideEffects.FoundWithSymbols" />
+    </rule>
+</ruleset>