Minor doc update and code formatting.
Minor doc update and code formatting.

dmnsgn/PreloadJS,SpringRoll/PreloadJS,ebabel-eu/PreloadJS,andrew168/PreloadJS,Teino1978-Corp/Teino1978-Corp-PreloadJS,sokeroner/PreloadJS,not-only-code/PreloadJS,SpringRoll/PreloadJS,tehvgg/PreloadJS,CreateJS/PreloadJS,andrew168/PreloadJS,cnbin/PreloadJS,cnbin/PreloadJS,Teino1978-Corp/Teino1978-Corp-PreloadJS,sokeroner/PreloadJS,tehvgg/PreloadJS,CreateJS/PreloadJS