Added UI Readme.
Added UI Readme.

bobsilverberg/moztrap,shinglyu/moztrap,mccarrmb/moztrap,bobsilverberg/moztrap,bobsilverberg/moztrap,mccarrmb/moztrap,mccarrmb/moztrap,shinglyu/moztrap,mozilla/moztrap,shinglyu/moztrap,mozilla/moztrap,mozilla/moztrap,shinglyu/moztrap,mozilla/moztrap,mccarrmb/moztrap,bobsilverberg/moztrap,shinglyu/moztrap,mozilla/moztrap,mccarrmb/moztrap