README.md in d3-rails-0.0.2 vs README.md in d3-rails-0.0.3

@@ -2,9 +2,13 @@
 
 [D3.js](http://github.com/mbostock/d3) is a JavaScript library for manipulating documents based on data. D3 helps you bring data to life using HTML, SVG and CSS.
 
 d3-rails provides D3 for Rails 3.1.
 
+## Version
+
+d3-rails comes with version 2.9.1 of D3.js.
+
 
 ## Installation
 
 Add this line to your `Gemfile`: