Build as a library that can be used externally

[andyjcross]

Greetings -
This project works great and I thought it'd be cool to make it usable in other projects.
I'm new to gulp, so I can't guarantee that the build tasks are ideal, but it is now creating a single redistributable file that has everything mpegts needs to run (including the WebWorker code) built in. I've tried to minimize changes to existing code. There's an example usage of the library in index-lib.html.

Thanks!
Andy

[RReverser]

I don't really see what exact problem this PR solves while adding additional complexity through yet another dependency management (Bower). This library is already exposed to npm and can be used externally from there, and is very well built with browserify/webpack/whatever.

[andyjcross]

The addition of bower wasn't totally necessary, for sure, but the idea of the PR is to package up the library to be used externally in websites (i.e. not in a node.js environment). The existing browser example had a bit of necessary glue code that is now nicely encapsulated - all you need to do is create a canvas and decorate it with the HLSPlayer() method.

I totally get it if this obscures the purpose here (demoing the technique), so definitely disregard the PR if it's not worth it.

[RReverser]

Well, I like the separate HLSPlayer, but I don't really want to use any extra dependency manager nor builder in this example.