Use thin instead of webrick in development

Gemfile

@@ -15,6 +15,7 @@ gem 'fog'
 gem 'simple_form'
 gem 'girl_friday'
 gem 'unicorn'
+gem 'thin'
 gem 'open4'
 gem 'redcarpet'
 

Gemfile.lock

@@ -56,12 +56,14 @@ GEM
       execjs
     coffee-script-source (1.2.0)
     connection_pool (0.1.0)
+    daemons (1.1.8)
     dalli (2.0.5)
     diff-lcs (1.1.3)
     draper (0.14.0)
       actionpack (~> 3.2)
       activesupport (~> 3.2)
     erubis (2.7.0)
+    eventmachine (0.12.10)
     excon (0.9.6)
     execjs (1.3.0)
       multi_json (~> 1.0)
@@ -231,6 +233,10 @@ GEM
     tailor (0.1.5)
       term-ansicolor (>= 1.0.5)
     term-ansicolor (1.0.7)
+    thin (1.3.1)
+      daemons (>= 1.0.9)
+      eventmachine (>= 0.12.6)
+      rack (>= 1.0.0)
     thor (0.14.6)
     tilt (1.3.3)
     treetop (1.4.10)
@@ -285,6 +291,7 @@ DEPENDENCIES
   simple_form
   simplecov
   tailor
+  thin
   tzinfo
   uglifier (>= 1.0.3)
   unicorn