Merge pull request #2 from trolleway/feature

add osm tracks

Author: simgislab

data_sources/osm_tracks/metadata.ini

@@ -0,0 +1,20 @@
+[general]
+id = osm_tracks
+type = TMS
+is_contrib = True
+
+[ui]
+group = OSM
+alias = Openstreetmap tracks
+icon = osm_tracks_symbol.png
+
+[license]
+name = 
+link = 
+copyright_text =
+copyright_link = 
+terms_of_use = 
+
+[tms]
+url = https://gps-a.tile.openstreetmap.org/lines/{zoom}/{x}/{y}.png
+zmax = 20