Use unicorn in production

Gemfile

@@ -36,6 +36,6 @@ group :development, :test do
 end
 
 group :production do
-  gem 'thin'
+  gem 'unicorn'
   gem 'rack-canonical-host'
 end

Gemfile.lock

@@ -62,11 +62,9 @@ GEM
       capybara (>= 1.1.2)
       cucumber (>= 1.1.8)
       nokogiri (>= 1.5.0)
-    daemons (1.1.8)
     database_cleaner (0.7.2)
     diff-lcs (1.1.3)
     erubis (2.7.0)
-    eventmachine (0.12.10)
     excon (0.13.4)
     execjs (1.4.0)
       multi_json (~> 1.0)
@@ -114,6 +112,7 @@ GEM
       railties (>= 3.2.0, < 5.0)
       thor (~> 0.14)
     json (1.7.3)
+    kgio (2.7.4)
     launchy (2.1.0)
       addressable (~> 2.2.6)
     libwebsocket (0.1.3)
@@ -161,6 +160,7 @@ GEM
       rdoc (~> 3.4)
       thor (~> 0.14.6)
     rake (0.9.2.2)
+    raindrops (0.10.0)
     rdoc (3.12)
       json (~> 1.4)
     rest-client (1.6.7)
@@ -205,10 +205,6 @@ GEM
       tilt (~> 1.1, != 1.3.0)
     stripe (1.6.3)
       rest-client (~> 1.4)
-    thin (1.3.1)
-      daemons (>= 1.0.9)
-      eventmachine (>= 0.12.6)
-      rack (>= 1.0.0)
     thor (0.14.6)
     tilt (1.3.3)
     timecop (0.3.5)
@@ -220,6 +216,11 @@ GEM
       execjs (>= 0.3.0)
       multi_json (>= 1.0.2)
     xpath (0.1.4)
+    unicorn (4.4.0)
+      kgio (~> 2.6)
+      rack
+      raindrops (~> 0.7)
+    websocket (1.0.4)
       nokogiri (~> 1.3)
 
 PLATFORMS
@@ -249,6 +250,6 @@ DEPENDENCIES
   sendgrid
   simplecov
   stripe (~> 1.6.2)
-  thin
   timecop (~> 0.3)
   uglifier (~> 1.2.3)
+  unicorn

Procfile

@@ -0,0 +1 @@
+web: bundle exec unicorn_rails -p $PORT -c ./config/unicorn.rb

config/unicorn.rb

@@ -0,0 +1,17 @@
+# unicorn_rails -c /data/github/current/config/unicorn.rb -E production -D
+
+rails_env = ENV['RAILS_ENV'] || 'production'
+
+# 3 workers and 1 master
+worker_processes 3
+
+# Load rails+github.git into the master before forking workers
+# for super-fast worker spawn times
+preload_app true
+
+# Restart any workers that haven't responded in 30 seconds
+timeout 30
+
+after_fork do |server, worker|
+  ActiveRecord::Base.establish_connection
+end