Echo JS 0.11.0

Nice, this and tabbed view are preferred for doc/comment edits in apps for me these days.  I did some work to adapt a Medium-like editor that loads/saves as markdown through some filters, but that was a lot of painful work.

One suggestion, for those using this, would be to use an async loader so that it's not loaded until it's needed in your application.  Markdown libraries tend to be relatively big.