[Gemfile] Lock Molinillo to 0.3.x for now

Gemfile

@@ -21,7 +21,7 @@ group :development do
   cp_gem 'cocoapods-stats',      'cocoapods-stats'
   cp_gem 'cocoapods-trunk',      'cocoapods-trunk'
   cp_gem 'cocoapods-try',        'cocoapods-try'
-  cp_gem 'molinillo',            'Molinillo'
+  cp_gem 'molinillo',            'Molinillo', '0.3-stable'
   cp_gem 'xcodeproj',            'Xcodeproj'
 
   gem 'cocoapods-dependencies'

Gemfile.lock

@@ -18,7 +18,7 @@ GIT
 GIT
   remote: https://github.com/CocoaPods/Molinillo.git
   revision: 604847cee4a460590bb6c67ffac4279ea3c02b8f
-  branch: master
+  branch: 0.3-stable
   specs:
     molinillo (0.3.1)