Merge pull request #36 from rogerz/event

Add onBegin() and onEnd().
Release v1.3.0.
Fix to enable touch events in IE

szimek/signature_pad/21
Reverting generated files
Merge pull request #37 from tocsoft/WindowPhone

Fix to enable touch events in IE
Minor formatting fixes.
Release v1.3.1.
Fix onEnd and onBegin not copied to this.

Signed-off-by: Szymon Nowak <szimek@gmail.com>
Release v1.3.2.
Merge remote-tracking branch 'origin/master'

Conflicts:
	signature_pad.min.js
Add grunt open task