Update readme to document coffeescript usage

Author: zpao

README.md

@@ -66,3 +66,15 @@ end
 ```
 
 
+## CoffeeScript
+
+It is possible to use JSX with CoffeeScript. The caveat is that you will still need to include the docblock. Since CoffeeScript doesn't allow `/* */` style comments, we need to do something a little different. We also need to embed JSX inside backticks so CoffeeScript ignores the syntax it doesn't understand. Here's an example:
+
+```coffee
+###* @jsx React.DOM ###
+
+Component = React.createClass
+  render: ->
+    `<ExampleComponent videos={this.props.videos} />`
+```
+