[Gemfile] Use pretty bacon from RubyGems

Gemfile

@@ -18,7 +18,7 @@ group :development do
   gem "mocha"
   gem "bacon"
   gem "mocha-on-bacon"
-  gem 'prettybacon', :git => 'https://github.com/irrationalfab/PrettyBacon.git', :branch => 'master'
+  gem 'prettybacon'
   gem 'webmock', "< 1.16"
 
   # For the integration tests

Gemfile.lock

@@ -48,14 +48,6 @@ GIT
       nap (>= 0.6)
       netrc
 
-GIT
-  remote: https://github.com/irrationalfab/PrettyBacon.git
-  revision: 1eeb06f7d381acd65414b86b42fdf3538faae01c
-  branch: master
-  specs:
-    prettybacon (0.0.2)
-      bacon (~> 1.2)
-
 GIT
   remote: https://github.com/ruby-prof/ruby-prof.git
   revision: b56c1268ba001f5eb55f940ca1c83bc6b83a9752
@@ -126,6 +118,8 @@ GEM
     notify (0.5.2)
     open4 (1.3.3)
     posix-spawn (0.3.8)
+    prettybacon (0.0.2)
+      bacon (~> 1.2)
     pry (0.9.12.6)
       coderay (~> 1.0)
       method_source (~> 0.8)
@@ -179,7 +173,7 @@ DEPENDENCIES
   mime-types (< 2)
   mocha
   mocha-on-bacon
-  prettybacon!
+  prettybacon
   pry
   pygments.rb
   rake (~> 10.1.0)