Added capturing yaw trim on start up to allow I term of Yaw PID controller to be lower
Added D term to Yaw's PID controller
Modified default PID settings for all axis. Now includes some D term.
git-svn-id: https://arducopter.googlecode.com/svn/trunk@1016 f9c3cf11-9bcb-44bc-f272-b75c42450872