Add documentation about all possible event types.
Merge pull request #9 from MohawkApps/event-documentation

Add documentation about all possible event types.
hey now that's a big release!  3.0.0, uses Firebase 1.2.2, which removes FirebaseSimpleLogin and a few more changes
fixed whitespace, no need for the indentation
3.0 link
3.0.md += checklist
darn ruby syntax
ahh, 'auth' is an internal method
one last method fix
fix version number
'app/bad' is no longer OK for Firebase.url=
fixes 'disconnect' variable name
added explicit 'remove_on_disconnect' method