README.md in chart_js-1.0.0 vs README.md in chart_js-1.0.1pre

@@ -2,10 +2,12 @@
 
 [Chart JS](http://www.chartjs.org/) is a simple yet flexible JavaScript charting library. This [gem](https://rubygems.org/) is a Ruby [Domain Specific Language](https://en.wikipedia.org/wiki/Domain-specific_language) which allows you to easily build charts without touching a single line of JavaScript or HTML.
 
 ## Installation
 
-    $ gem install chart_js
+This gem is still in development. Install with `--pre`.
+
+    $ gem install chart_js --pre
 
 ## Usage
 
 A simple example to generate a static html file.