Clarify installation, role, and supported environments
Clarify MF API with links and simpler example
Remove "Specifying data" section (outdated)

Closes #45
Remove old API docs in README
Clarify options for overriding a real Firebase ctor with MF
Style fix for AMD/Browser heading
Switch support disclaimer to italics
Remove IE < 9 non-support notice
Add a tutorials directory to detailed examples
Switch all assert calls to console.assert
Create a basic tutorial that covers simple testing of reads/writes

Closes #44
Add an auth tutorial

Closes #43
Correct variable name
Correctly implement lazy instantiation for ref
Add tutorial on simulating errors
Move override and proxyquire instructions out to separate tutorials
Remove javadocs