README.md in es6-promise-rails-2.0.2.1 vs README.md in es6-promise-rails-2.1.0

@@ -10,10 +10,10 @@
 gem 'es6-promise-rails'
 ```
 Add it to your JavaScript manifest file:
 
 ``` js
-//= require es6-promise
+//= require promise
 ```
 
 ## License
 
 The MIT License (MIT)