Merge branch 'dev'

Change log:

* Added a prompt
* Changed command shortcuts (say -> //, emote -> /, eval -> `)
* Added a `hidden` attribute to verbs to prevent players from invoking them
* Added a `do_verb` function as a wrapper for setTimeout
* Refactored code a bunch
* Fixed some bugs
Merge branch 'dev'
Merge branch 'dev'
Merge branch 'dev'
Merge branch 'dev'
Merge branch 'dev'
Merge branch 'dev'
Merge branch 'dev'
Merge branch 'dev'
Merge branch 'dev'
Merge branch 'dev'
Merge branch 'dev'
Merge branch 'dev'
Merge branch 'dev'
Completely restructure the app to be a little more like a regular express app.
Fully support configurable languages for verbs:

CoffeeScript and Javascript currently supported, trivial to add new ones.
Updated README a bit, fixed bug preventing evaling code.
Merge branch 'redux'
Tweaks.
Only use verb timeout on first level calls.

Prevents a large number of watchdog threads from spawning.