3.2.0 - Mutation Observer support & some fixes

New options
- enablescrollonselection, enable auto-scrolling of content when selection text (default:true)

New features
- chrome/firefox, detection of div removing to remove nicescroll automatically too, using Mutation Observer - close #160
- desktop browsers, auto-scrolling on div when selecting text - close #184

Changed features
- cursor:pointer to rails, thanks to MacGuyv3r

Fixes
- zindex problem with zoomout/zoomin
- chrome 26+, hw scroll doesn't work, transform css property detection issue - close #187
- wrapped div scroll, bounce hangs
- grabcursorenabled doesn't work - commit ed40d2b - thanks to bmxpert1