Loosen development dependency constraints

Gemfile.lock

@@ -30,10 +30,10 @@ PLATFORMS
 DEPENDENCIES
   faraday (~> 0.5.0)
   faraday_middleware!
-  hashie (~> 0.4.0)
-  json (~> 1.4.6)
-  multi_json (~> 0.0.4)
-  multi_xml (~> 0.1.0)
-  oauth2 (~> 0.1.0)
-  rake (~> 0.8.7)
-  shoulda (~> 2.11.3)
+  hashie (~> 0.4)
+  json (~> 1.4)
+  multi_json (~> 0.0)
+  multi_xml (~> 0.1)
+  oauth2 (~> 0.1)
+  rake (~> 0.8)
+  shoulda (~> 2.11)

faraday_middleware.gemspec

@@ -1,14 +1,14 @@
 require File.expand_path("../lib/faraday_middleware/version", __FILE__)
 
 Gem::Specification.new do |s|
-  s.add_development_dependency('hashie', ['~> 0.4.0'])
-  s.add_development_dependency('json', ['~> 1.4.6'])
-  s.add_development_dependency('multi_json', ['~> 0.0.4'])
-  s.add_development_dependency('multi_xml', ['~> 0.1.0'])
-  s.add_development_dependency('oauth2', ['~> 0.1.0'])
-  s.add_development_dependency('rake', ['~> 0.8.7'])
-  s.add_development_dependency('shoulda', ['~> 2.11.3'])
-  s.add_runtime_dependency('faraday', ['~> 0.5.0'])
+  s.add_development_dependency('hashie', '~> 0.4')
+  s.add_development_dependency('json', '~> 1.4')
+  s.add_development_dependency('multi_json', '~> 0.0')
+  s.add_development_dependency('multi_xml', '~> 0.1')
+  s.add_development_dependency('oauth2', '~> 0.1')
+  s.add_development_dependency('rake', '~> 0.8')
+  s.add_development_dependency('shoulda', '~> 2.11')
+  s.add_runtime_dependency('faraday', '~> 0.5.0')
   s.authors = ["Wynn Netherland"]
   s.description = %q{Various middleware for Faraday}
   s.email = ['wynn.netherland@gmail.com']