Added custom icon functionality, modified examples and updated version.

[EmanueleCoppola]

Now you can use the markerIcon options like this:

<script>
    $('#somecomponent').locationpicker({
        markerIcon: 'http://linktosomeicons.com/icon.png'
    });
</script>

This will use a custom image for the marker.

_Note_: This also contain the Merge pull request #28 from brendannee/master in the dist folder (built with grunt).

[corvis]

Nice one. Thanks Emanuele