Add locate widget to map

Vendorfile

@@ -16,6 +16,10 @@ folder 'vendor/assets' do
       folder 'img', 'src/img'
     end
 
+    from 'git://github.com/domoritz/leaflet-locatecontrol.git' do
+      file 'leaflet.locate.js', 'src/L.Control.Locate.js'
+    end
+
     from 'git://github.com/jfirebaugh/leaflet-osm.git' do
       file 'leaflet.osm.js', 'leaflet-osm.js'
     end

app/assets/javascripts/index.js

@@ -21,6 +21,9 @@ $(document).ready(function () {
 
   OSM.mapUI().addTo(map);
 
+  L.control.locate({
+      position: 'topright'
+  }).addTo(map);
   L.control.scale().addTo(map);
 
   map.attributionControl.setPrefix(permalinks);