Collected more data and shifted cron jobs
Added several extra cities, because of their street art promenience
Added a variety of new start cities.

Added a URI escape for the tag hoover, to ensure funny characters would make it across the interwubs when I sent them to Instagram.
Added html button and fixed cron schedule
Added styling for device-location button.

Added event listener for device-location button.

Created customLeaflet.deviceLocation event listener for the device-location button, in order to trigger a function when the user wants to allow the use of device location.

Created customLeaflet.onLocationFound to act as callback for successful locate event

Created customLeaflet.roundedLatLng to prepare any latlng object for passing to the dataRequest function

Updated cron schedule
Added locationError functions.
Added event listener for each marker, with test callback handler.

Updated read-me
Built out the onClick function for markers. Now they integrate popups, enlarging the icon, pulling the icon to the front and can be clicked on and off.

This required an extra icon constructor, woop.

The currentOffset shenanigans is there to ensure if there are multiple markers that have been enlarged, the most recently enlarged marker will come to the top of the markers.

Passing the thumb url as one of the marker options, so I can access it once the click event occurs

Bound a popup to each marker, with the full url of the entry, so that users can check those out.
Merge pull request #28 from thomasgwatson/leaflet_markers_upgrade

Leaflet markers upgrade