README.md in lentil-0.4.0 vs README.md in lentil-0.4.2

@@ -13,10 +13,17 @@
 
 Although we are using this gem in production, **this gem should be considered an early release**.
 
 ## Installation
 
-lentil has been tested under Ruby 1.9.3 and 2.1.0.
+lentil has been tested under Ruby 1.9.3 and 2.1.5. **Ruby 2.2.x is not currently supported.**
+
+### Create a new Rails app with Rails 3.2.x
+
+```sh
+rails new your_app_name
+cd your_app_name
+```
 
 ### Add lentil and therubyracer (or another ExecJS runtime) to your Gemfile and `bundle`
 
 ```ruby
 gem 'lentil'