Explain reasoning behind kitty gifts
Summary: I find this fact very useful for understanding my feline companion
Test Plan: Added "Motivator: Cat Facts" to the project, nothing broke
Reviewers: #blessed_reviewers, epriestley
Reviewed By: #blessed_reviewers, epriestley
Subscribers: epriestley
Differential Revision: https://secure.phabricator.com/D16374