Add some notes about the usage of yoob.js.
Make text colour in Fingerspelling configurable.
Upgrade all yoob.js modules to 0.5.
Consolidate yoob.js files to common directory.

--HG--
rename : chzrxl/yoob/animation-frame.js => common-yoob.js-0.5/animation-frame.js
rename : multicolouralism/yoob/splash-screen.js => common-yoob.js-0.5/splash-screen.js
rename : a-non-random-walk/yoob/sprite-manager.js => common-yoob.js-0.5/sprite-manager.js
Use requestAnimationFrame (naively) instead of setInterval.