Update gemspec [ci skip]

oauth2.gemspec

@@ -1,19 +1,18 @@
-# -*- encoding: utf-8 -*-
+# encoding: utf-8
 require File.expand_path('../lib/oauth2/version', __FILE__)
 
 Gem::Specification.new do |gem|
+  gem.add_dependency 'faraday', '~> 0.7.4'
+  gem.add_dependency 'multi_json', '~> 1.0.0'
+  gem.add_development_dependency 'multi_xml', '~> 0.3'
   gem.add_development_dependency 'rake', '~> 0.9'
   gem.add_development_dependency 'rdoc', '~> 3.6'
   gem.add_development_dependency 'rspec', '~> 2.6'
   gem.add_development_dependency 'simplecov', '~> 0.4'
   gem.add_development_dependency 'yard', '~> 0.7'
-  gem.add_development_dependency 'multi_xml'
-  gem.add_runtime_dependency 'faraday', ['>= 0.6.1', '< 0.8']
-  gem.add_runtime_dependency 'multi_json', '~> 1.0.0'
   gem.authors = ["Michael Bleigh", "Erik Michaels-Ober"]
   gem.description = %q{A Ruby wrapper for the OAuth 2.0 protocol built with a similar style to the original OAuth gem.}
   gem.email = ['michael@intridea.com', 'sferik@gmail.com']
-  gem.executables = `git ls-files -- bin/*`.split("\n").map{ |f| File.basename(f) }
   gem.files = `git ls-files`.split("\n")
   gem.homepage = 'http://github.com/intridea/oauth2'
   gem.name = 'oauth2'