Updated Icons to accept DivIcon & Icon classes
Merge pull request #125 from JaumeFigueras/master

Updated Icons to accept DivIcon & Icon classes
Added a default grunt task which will start the development mode:
    * Pass the test
    * lint the js files
    * uglify the library if everything was good
Linted all files, including tests
Solved a partial issue of this ticket:
https://github.com/tombatossals/angular-leaflet-directive/issues/120
Added support for MarkerCluster Plugin
Added support for MarkerCluster Plugin (resolved conflict)
Merge pull request #126 from JaumeFigueras/master

Added support for MarkerCluster Plugin
Default center zoom set to "1", so an unset center property will show the world map
The default zoom level must be set to 10. :P
Support for Google Leaflet Plugin by Pavel Shramov
Merge pull request #127 from elesdoar/master

Support for Google Leaflet Plugin by Pavel Shramov