remove dangling comma
Move usage of Uint8Array into a function.
This memoizes widthBytes, heightBytes, and videocodedidBytes for later
uses after the first invocation of hls.FlvTag.
Don't init plugin if Uint8Array isn't available
Merge branch 'master' into smallerrors

Conflicts:
	src/flv-tag.js
Merge pull request #28 from videojs/smallerrors

Small errors