Added Cake.HockeyApp to addin list.
Added Cake.HockeyApp to addin list.

SharpeRAD/Cake.Website,devlead/website,cake-build/website,cake-build-bot/website,devlead/website,devlead/website,cake-build/website,cake-build/website,SharpeRAD/Cake.Website,cake-build-bot/website