Add webmock gem

Will be used to stub outgoing HTTP request

Author: dsager

article_json.gemspec

@@ -30,5 +30,6 @@ txt
 
   s.add_development_dependency 'bundler', '~> 1.15'
   s.add_development_dependency 'rspec', '~> 3.6'
+  s.add_development_dependency 'webmock', '~> 3.0'
   s.add_development_dependency 'coveralls', '~> 0.8'
 end

spec/spec_helper.rb

@@ -1,6 +1,8 @@
 require 'coveralls'
 Coveralls.wear!
 
+require 'webmock/rspec'
+
 require 'article_json'
 
 # This file was generated by the `rspec --init` command. Conventionally, all