Don't default to Switzerland for center: { lat, lng }

[bittner]

The JavaScript implementations currently initialize the center value to an arbitrary point in Switzerland:

• googlemaps.js, line L61
• mapbox.js, line 65

This results in the map "jumping" from an initially drawn location in Switzerland to the location specified by the plugin user (the website). The behavior seems unnecessary and can be avoided.

Expected Result, Expected Implementation

• The map should draw the requested location immediately. No "jumping" should be noticeable.
• The options.center value can be initialized correctly before the map is initialized and drawn.