+gem 'composite_primary_keys', '= 5.0.4'
+gem 'http_accept_language', '>= 1.0.2'
+gem 'paperclip', '~> 2.0'
+gem 'deadlock_retry', '>= 1.2.0'
+
+# Browser detection support
+gem 'browser'
+
+# Markdown formatting support
+gem 'redcarpet'
+
+# Character conversion support for ruby 1.8
+gem 'iconv', :platforms => :ruby_18