Updated README

README.md

@@ -17,16 +17,10 @@ Run `bundle install` and add the following line to
 
     //= require ember
 
-If you want to include the new date-time helpers provided by ember, you
-can use:
-
-    //= require ember-datetime
-
 Ember-rails also provides a way to run Ember in development mode, you
 can switch out your require statements to use the dev copies like so:
 
     //= require ember-dev
-    //= require ember-datetime-dev
 
 Ask Rails to serve HandlebarsJS and pre-compile templates to Ember
 by putting each template in a dedicated ".js.hjs" or ".handlebars" file
@@ -44,10 +38,6 @@ Now a single line in the layout loads everything:
 
     <%= javascript_include_tag "templates/all" %>
 
-## History
-
-ember-rails is based on https://github.com/kiskolabs/sproutcore-rails.
-
 ## Note on Patches/Pull Requests
 
 1. Fork the project.