updated contributing guidelines
Added additional property check to guard against simulated touch events
fixes #115 - unsubscribe events on unbind

cleaned up unsubscribe logic
Merge branch 'sweetpi-master'

Conflicts:
	dist/jquery.pep.min.js
Merge branch 'master' of https://github.com/damassi/jquery.pep.js into damassi-master
cleaned up forceNonCSS3Movement
packaged pep - v0.6.0