Use stable version of onebox gem rather than github

Gemfile

@@ -72,7 +72,7 @@ gem 'redis', :require => ["redis", "redis/connection/hiredis"]
 gem 'active_model_serializers'
 
 
-gem 'onebox', git: 'https://github.com/dysania/onebox.git'
+gem 'onebox'
 
 gem 'ember-rails'
 gem 'ember-source', '~> 1.2.0.1'

Gemfile_rails4.lock

@@ -1,15 +1,3 @@
-GIT
-  remote: https://github.com/dysania/onebox.git
-  revision: 6a2f6e6a08f183a4df52f9a51187f566b8ae3a00
-  specs:
-    onebox (1.1.0)
-      hexpress (~> 1.2)
-      moneta (~> 0.7)
-      multi_json (~> 1.7)
-      mustache (~> 0.99)
-      nokogiri (~> 1.6.1)
-      opengraph_parser (~> 0.2.3)
-
 PATH
   remote: vendor/gems/discourse_plugin
   specs:
@@ -213,6 +201,13 @@ GEM
     omniauth-twitter (1.0.1)
       multi_json (~> 1.3)
       omniauth-oauth (~> 1.0)
+    onebox (1.2.0)
+      hexpress (~> 1.2)
+      moneta (~> 0.7)
+      multi_json (~> 1.7)
+      mustache (~> 0.99)
+      nokogiri (~> 1.6.1)
+      opengraph_parser (~> 0.2.3)
     opengraph_parser (0.2.3)
       addressable
       nokogiri
@@ -431,7 +426,7 @@ DEPENDENCIES
   omniauth-oauth2
   omniauth-openid
   omniauth-twitter
-  onebox!
+  onebox
   openid-redis-store
   pg (= 0.15.1)
   pry-nav