Fix logger so that it logs to the log file and not stderr.

Fixes #10

lib/heel.rb

@@ -10,6 +10,7 @@ module Heel
 require 'heel/configuration'
 require 'heel/directory_indexer'
 require 'heel/error_response'
+require 'heel/logger'
 require 'heel/mime_map'
 require 'heel/rackapp'
 require 'heel/request'

lib/heel/logger.rb

@@ -0,0 +1,14 @@
+module Heel
+  class Logger
+    attr_reader :filename
+    def initialize( filename )
+      @filename = File.expand_path( filename )
+    end
+
+    def write( msg )
+      File.open( filename, "ab" ) do |f|
+        f.write( msg )
+      end
+    end
+  end
+end

lib/heel/server.rb

@@ -219,7 +219,11 @@ def launch_browser
     def heel_app
       app = Heel::RackApp.new({ :document_root => options.document_root,
                                 :highlighting  => options.highlighting})
+
+      logger = Heel::Logger.new( log_file )
+
       stack = Rack::Builder.new {
+        use Rack::CommonLogger, logger
         map "/" do
           run app
         end
@@ -256,7 +260,7 @@ def server_options
         :pid  => pid_file,
         :Port => options.port,
         :Host => options.address,
-        :environment => 'deployment',
+        :environment => 'none',
         :server => 'puma',
         :daemonize => options.daemonize
       }