Merge pull request #2 from n00shie/master

Fixed Grunt Package CDN Path. Tested. Workin'
Renamed ad3 file to avoid Adblock problems
Enable source map support

The quickest way to get this done was to subfolder the angularD3 files
under /src/angularD3 so that relative path problems were minimized.
Added data directive
merge
Fixes watch paths
Support a more flexible data API

Add support for object data maps where the property names for x and y
can be specified using attributes. Falls back to coordinate support if
no property names are specified.
Fixed default src
Merge pull request #3 from n00shie/data-source-directives

Data source directives
Merge pull request #4 from WealthBar/better-data-api

Support a more flexible data API