Add support for Rubinius 2

See #713.

.travis.yml

@@ -13,8 +13,7 @@ rvm:
   - jruby-20mode
   - jruby-21mode
   - jruby-head
-  - rbx-18mode
-  - rbx-19mode
+  - rbx
 matrix:
   allow_failures:
     - rvm: jruby-head

Gemfile

@@ -26,4 +26,9 @@ group :test do
   gem 'simplecov', :require => false
 end
 
+platforms :rbx do
+  gem 'rubinius-coverage', '~> 2.0'
+  gem 'rubysl', '~> 2.0'
+end
+
 gemspec

Gemfile.rack-1.3.x

@@ -13,4 +13,9 @@ group :test do
   gem 'simplecov', :require => false
 end
 
+platforms :rbx do
+  gem 'rubinius-coverage', '~> 2.0'
+  gem 'rubysl', '~> 2.0'
+end
+
 gemspec

README.md

@@ -144,7 +144,7 @@ your first stop if you are wondering about a more in-depth look at
 OmniAuth, how it works, and how to use it.
 
 ## Supported Ruby Versions
-OmniAuth is tested under 1.8.7, 1.9.2, 1.9.3, 2.0.0, JRuby, and Rubinius (1.8 and 1.9 modes).
+OmniAuth is tested under 1.8.7, 1.9.2, 1.9.3, 2.0.0, JRuby, and Rubinius.
 
 ## Versioning
 This library aims to adhere to [Semantic Versioning 2.0.0][semver]. Violations