Merge pull request #419 from Bugagazavr/use-gems

Use gems instead github ref

Author: kzaitsev

CHANGELOG.md

@@ -8,6 +8,7 @@
 #### Fixes
 
 * [#416](https://github.com/ruby-grape/grape-swagger/pull/416): Support recursive models - [@lest](https://github.com/lest).
+* [#418](https://github.com/ruby-grape/grape-swagger/pull/418): Replaced github ref to rubygems for external gems - [@Bugagazavr](https://github.com/Bugagazavr).
 
 ### 0.20.3 (May 9, 2016)
 

Gemfile

@@ -9,4 +9,4 @@ else
   gem 'grape', version
 end
 
-gem ENV['MODEL_PARSER'], github: "bugagazavr/#{ENV['MODEL_PARSER']}" if ENV.key?('MODEL_PARSER')
+gem ENV['MODEL_PARSER'] if ENV.key?('MODEL_PARSER')