Update plugin to add hls to default tech order
update exmaple page with new implementation
update README
Put HLS at the front of the techOrder by default. Make the tech a no-op if HLS is supported natively.
Update the default techOrder to include HLS support first when the plugin is loaded. Prefer HTML5 implementations if they're available. Added tests to verify both constraints.
Merge pull request #94 from videojs/feature/auto-tech-order

Rebased update-options