Update to 1.4.0 of JS Beautifier
Correct matching of multi-line function arguments

Fixes #17
Improve matching of object literal keys and function variables

* Object literal keys are now scoped properly
* Fixed function variable scope/highlighting inconsistency
* Updated Symbol List to contain all function declarations, function expressions
  and object literal keys that are functions
Add jQuery-Documentation command
Open jQuery documentation in browser instead of HTML pane.
Enable JS and jQuery documentation in CoffeeScript, too.
Use search function on api.jquery.com when looking up documentation.

This is necessary to avoid 404 errors when looking up something like `ajax` (which is documented under `jQuery.ajax`).