Update angular-gridster.js

gridster.curRowHeight was not getting set when gridster.rowHeight was an integer.
Merge pull request #180 from michaelferry/master

Update angular-gridster.js
support minSizeX/Y, maxSizeX/Y for items based on gridster or item config
docs for min/max size x/y
increment version number
Merge branches 'master' and 'master' of github.com:ManifestWebDesign/angular-gridster
don't drag on input elements.  increment version number.