Update jquery.storelocator.js

Possibility to add custom variables in locations.

If 'distance' variable is set in location, do not calculate it.

Simplified some parts of the code.
Update jquery.storelocator.js

Store the map object into the jQuery object in order to retrieve it by calling $object.data('map')
Merge pull request #9 from ollea/patch-1

Update jquery.storelocator.js