Merge pull request #64 from codebreach/master

Removed non printable character from ng-grid.css
Update README.md
workaround for #63 & add groupable coldef option
removing recusrsive data watching
watching data array length instead

also fixed Total Items length to show 0 when array is empty
adding fix for issue #58
updating build to 1.5.0
fixing build script
hotfixing data array watchers

Now the data will update properly when push/pop and data reassignment
happens. Splice is not fully supported. copy your array to a temp var,
splice, then reassign is the best way.
Added modify example to index2.html
Added check for data length.
$watches for selected rows get fired when using key down events.
Added very provisional CSV export plugin for ng-grid for issue #70
Merge pull request #71 from maxcan/master

Added very provisional CSV export plugin for ng-grid for issue #70
adding i18n support and a few languages

Also added support for compiling with a different interpolation symbol.
adding function to watch for language changes.
adding fix for #66
changing paging behavior

if totalServerItems is 0 (default) then there are no jump to first/last
paging buttons.
changing so that pageToLast is disabled when totalServer items is 0
updating build to 1.6.0

fixing issues #66, #67,  #68, #69,