Use AsyncRack::CommonLogger in generated app

lib/cramp/generators/templates/application/Gemfile

@@ -8,6 +8,9 @@ gem 'thin'
 # Rack based routing
 gem 'http_router'
 
+# Collection of async-proof rack middlewares
+gem 'async-rack'
+
 # For async Active Record models
 <% if active_record? -%>
 gem 'mysql2', '~> 0.2.11'

lib/cramp/generators/templates/application/config.ru

@@ -1,5 +1,20 @@
 require './application'
-
-# bundle exec thin --max-persistent-conns 1024 -V -R config.ru start
 <%= app_const %>.initialize!
+
+# Development middlewares
+if <%= app_const %>.env == 'development'
+  require 'async-rack'
+  use AsyncRack::CommonLogger
+end
+
+# Running thin :
+#
+#   bundle exec thin --max-persistent-conns 1024 -R config.ru start
+#
+# Vebose mode :
+#
+#   Very useful when you want to view all the data being sent/received by thin
+#
+#   bundle exec thin --max-persistent-conns 1024 -R -V config.ru start
+#
 run <%= app_const %>.routes