Updated Limiter description.
Added project status.
Removed bug in Stop, added Pause changed State constants

Stop returned an error if the Limiter’s state was not Active, which
prevents Stop from stopping a Locked Limiter.
removed error return var from unlock, updated Stop
Removed Active, Locked and stopped

Removed Active() and Locked() because a Limiter can both be Active and
Locked at the same time.  Limiter state should now be checked using
State().
Merge Dev to Master
Large rewrite, added Token and Bucket

Very large rewrite.  Limiter has been updated (most finalized) and
debugged - functionality has also been improved.

Added two Limiter wrappers Ticker and Bucket (token bucket).
Merge branch 'development'

Conflicts:
	limiter.go
Deleting everything to clear conflict with development branch