Added OpenStreetMap detection

This script detects if OpenStreetMap is used in OpenLayers or in Leaflet map viewers. Besides Google Maps the most often used tile layer. This script checks if a link with a OpenstreetMap copyright is printed. Probably there are smarter options but I couldn't detect them.
I think you need brackets here like this<code>"implies": [ "OpenLayers", "Leaflet" ]</code>.
The implies field is an array.