Fixes cucumber spec errors caused by c783b1fc

paperclip.gemspec

@@ -28,7 +28,7 @@ Gem::Specification.new do |s|
 
   s.add_development_dependency('activerecord', '>= 3.2.0')
   s.add_development_dependency('shoulda')
-  s.add_development_dependency('rspec')
+  s.add_development_dependency('rspec', '~> 3.0')
   s.add_development_dependency('appraisal')
   s.add_development_dependency('mocha')
   s.add_development_dependency('aws-sdk', '>= 1.5.7', "<= 2.0")