extra detail on the CLA

contributing.md

@@ -28,10 +28,18 @@ Yeoman has three primary repos:
 
 We'd love to accept your code patches! However, before we can take them, we have to jump a couple of legal hurdles.
 
+We need you to sign a CLA. In summary, the CLA asserts that when you donate fixes or documentation, you both own the code that you're submitting and that Google can in turn license that code to other people. (In this case, making it available under the BSD license)
+
+Just FWIW, here are some other projects that require a similar agreement: jQuery, Firefox, Sizzle, Dojo, Plone, Fedora, Cordova/Phonegap, Apache, Flex.
+
 **Please fill out an [individual CLA](http://code.google.com/legal/individual-cla-v1.0.html).** There is a web form at the bottom; shouldn't take too long.
 
 (If you work for a company that wants to allow you to contribute, you'll need to complete a [corporate CLA](http://code.google.com/legal/corporate-cla-v1.0.html).)
 
+More about CLAs:
+* http://wiki.civiccommons.org/Contributor_Agreements
+* http://incubator.apache.org/ip-clearance/index.html
+* http://dojofoundation.org/about/cla
 
 ## Quick Start