Drop tolerance

[mickmcgrath13]

This would be a useful feature.
Similar to: http://api.jqueryui.com/droppable/#option-tolerance

[mickmcgrath13]

https://github.com/bitovi/jquerypp/tree/drop-tolerance
Still todo:

• Tests
• Docs
• Performance Tuning

[mickmcgrath13]

Still todo:

• Tests (a53bd54)
• Docs
• Performance Tuning

[mickmcgrath13]

..so tests all pass when I go to test.html, but not through grunt test.. I'll look into that later :-/

[mickmcgrath13]

works in chrome, but not firefox

[mickmcgrath13]

bitovi/syn#98

[mickmcgrath13]

PR: bitovi/syn#102