[documentation] Tools for effective reverse bounties

[Rob Barreca]

Posted a quick stub page for reverse bounties, with some info on ChipIn 
and Donorge as tools. I'm not familiar with Donorge, and am partial to 
ChipIn so it could use some love from someone else with another bias.

Thoughts?

-- 

Rob Roy Barreca
Founder and COO
Electronic Insight Corporation
http://www.electronicinsight.com
rob at electronicinsight.com