Merge pull request #2 from pgoldrbx/master

Added purge method to clear all topics
update version numbers
Disable console log if debug is set to false

During debug you can override the debug setting
by setting jQuery.pubsub.debug = true
Merge pull request #3 from Eagllus/master

Disable console log if debug is set to false
Merge branch 'master' of github.com:Digitalxero/jquery-pubsub
Merging from upstream