Add ruby fence name to test block

kevinsawicki · web-flow · commit f04dd63af2bc · 2017-06-19T12:09:04.000-07:00
diff --git a/README.md b/README.md
@@ -31,7 +31,7 @@ end
 
 It's easy to test:
 
-```
+```ruby
 class MyControllerTestCase < ActionController::TestCase
   include Chatops::Controller::TestCaseHelpers
   before do
