Update for Handlebars 1.2 and bind-attr helper
Merge pull request #118 from inDream/master

Update for Handlebars 1.2 and bind-attr helper
Bump to 0.3.6
Another stab at travis
Saucelab some other day
Spoke too soon, saucelabs was starting to work
Coalesce shorthand classes into attributes

Shorthand classes are prepended to attribute if provided.

- Addresses machty/emblem.js#78
Apply only to bind-attr mustache nodes.