Fixes Option Names Passed to Coco

Minor patch, mostly fixing the option names passed to `Coco.compile()` -- `inline` is `bare`, and `generatedFile` is `filename`. Not sure when this changed, but I imagine it was a long time ago.

I also updated the readme, as you do *not* need to require using `.co`, you merely need to ensure your files are named with `.co` -- browserify will resolve all modules to absolute filepaths, which means normal JS modules become `.js` filepaths and so do our Coco files.