switch to thin

Gemfile

@@ -20,7 +20,7 @@ gem 'rdiscount'
 gem 'postmark-rails'
 
 group :deployment do
-  gem 'unicorn'
+  gem 'thin'
   gem 'rack-ssl'
 end
 

Gemfile.lock

@@ -80,13 +80,15 @@ GEM
       capybara (>= 1.1.2)
       cucumber (>= 1.1.3)
       nokogiri (>= 1.5.0)
+    daemons (1.1.5)
     database_cleaner (0.7.0)
     devise (1.5.3)
       bcrypt-ruby (~> 3.0)
       orm_adapter (~> 0.0.3)
       warden (~> 1.1)
     diff-lcs (1.1.3)
     erubis (2.7.0)
+    eventmachine (0.12.10)
     execjs (1.2.13)
       multi_json (~> 1.0)
     ffi (1.0.11)
@@ -104,7 +106,6 @@ GEM
       railties (>= 3.2.0.beta, < 5.0)
       thor (~> 0.14)
     json (1.6.4)
-    kgio (2.6.0)
     launchy (2.0.5)
       addressable (~> 2.2.6)
     letter_opener (0.0.2)
@@ -141,7 +142,6 @@ GEM
       rake (>= 0.8.7)
       rdoc (~> 3.4)
       thor (~> 0.14.6)
-    raindrops (0.8.0)
     rake (0.9.2.2)
     rdiscount (1.6.8)
     rdoc (3.12)
@@ -190,6 +190,10 @@ GEM
     stripe (1.5.25)
       rest-client (~> 1.4)
     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)
@@ -199,10 +203,6 @@ GEM
     uglifier (1.2.1)
       execjs (>= 0.3.0)
       multi_json (>= 1.0.2)
-    unicorn (4.1.1)
-      kgio (~> 2.4)
-      rack
-      raindrops (~> 0.6)
     warden (1.1.0)
       rack (>= 1.0)
     xpath (0.1.4)
@@ -239,5 +239,5 @@ DEPENDENCIES
   sass-rails (~> 3.2.0.rc2)
   simple_form
   stripe
+  thin
   uglifier (>= 1.0.3)
-  unicorn

Procfile

@@ -1 +1 @@
-web: bundle exec unicorn -p $PORT -c ./config/unicorn.rb
+web: bundle exec rails server thin -p $PORT

config/application.rb

@@ -49,5 +49,7 @@ class Application < Rails::Application
     config.assets.initialize_on_precompile = false
 
     config.action_mailer.default_url_options = { :host => 'support.travis-ci.org' }
+
+    config.threadsafe!
   end
 end