Fixing some grammerz

README.md

@@ -50,7 +50,7 @@ module YourApp
 end
 ```
 
-We use `insert_before` to make sure `Rack::Cors` runs at the beginning of the stack to make sure it isn't interfered with with other middleware (see `Rack::Cache` note in **Common Gotchas** section). Check out the [rails 4 example](https://github.com/cyu/rack-cors/tree/master/examples/rails4) and [rails 3 example](https://github.com/cyu/rack-cors/tree/master/examples/rails3).
+We use `insert_before` to make sure `Rack::Cors` runs at the beginning of the stack to make sure it isn't interfered with by other middleware (see `Rack::Cache` note in **Common Gotchas** section). Check out the [rails 4 example](https://github.com/cyu/rack-cors/tree/master/examples/rails4) and [rails 3 example](https://github.com/cyu/rack-cors/tree/master/examples/rails3).
 
 See The [Rails Guide to Rack](http://guides.rubyonrails.org/rails_on_rack.html) for more details on rack middlewares or watch the [railscast](http://railscasts.com/episodes/151-rack-middleware).