WIP on documentation cleanup

This merges "documentation" and "guides", which
previously did not have clear semantic differences
WIP on documentation refactor
Fix syntax error in config.rb
Add more outline and write intro to guide section
some typo
revert filling -> filing
Merge pull request #156 from sly7-7/patch-1

fixed some typo
Toushay is using Ember.js
remember api visibility preference (#144)
Changed docs to indicate that handlebars isn't bundled.
added info about {{action}} and routers
Adds Handlebars basics guide
Adding plasmiq to a list of Ember users
Add Core Concepts guide
Update handlebars basics to be less crazy
Update to always name inline Handlebars

As of http://emberjs.com/blog/2012/10/25/ember-1-0-pre2/ inline Handlebars templates must always be named
This Week in Ember.js blog post
typo
Add guide on prototype extensions
Clean up enumerables guide