Ajax doesn't work.

[virtuPIC]

Setting URL to an address that delivers valid JSON doesn't work. As in the demo, you'll only get some 'undefined' stuff. Debugging turned out the following error in line 736 of file src/leaflet-search.js:

self._recordsCache = self._formatData(self, data)
should be
self._recordsCache = self._formatData(data)

[M2oMark]

I had the same problem and i guess a better fix is to use .call() on self._formatData passing self.

self._recordsCache = self._formatData.call(self, data)

This also fixes the "Ajax by jQuery" example and maybe more.

Greets

Edit: There's already a PR fixing this issue: #326