adding bower.json so this library could be registered as a bower package

[cacois]

I've added a bower.json file that will allow this package to be registered and uploaded to the bower registry. I have not registered it, since it's your code and I wanted to give you first shot. Here's the command to do it:

bower register Leaflet.MovingMarker git@github.com:ewoken/Leaflet.MovingMarker.git

Let me know if you have any questions.

[ewoken]

Thanks !