code: function(latlng, coords) {
  
  			var keys = geolib.getKeys(latlng);
  			var latitude = keys.latitude;
  			var longitude = keys.longitude;
  
  			for(var c = false, i = -1, l = coords.length, j = l - 1; ++i < l; j = i) {
  
  				(
  					(coords[i][longitude] <= latlng[longitude] && latlng[longitude] < coords[j][longitude]) ||
  					(coords[j][longitude] <= latlng[longitude] && latlng[longitude] < coords[i][longitude])
  				)
  			   && (latlng[latitude] < (coords[j][latitude] - coords[i][latitude]) 
  					* (latlng[longitude] - coords[i][longitude])
  					/ (coords[j][longitude] - coords[i][longitude]) + coords[i][latitude])
  			   && (c = !c);
  
  			}
  
  			return c;
  
  		}
docs: Checks whether a point is inside of a polygon or not.
  Note that the polygon coords must be in correct order!
  
  @param		object		coordinate to check e.g. {latitude: 51.5023, longitude: 7.3815}
  @param		array		array with coords e.g. [{latitude: 51.5143, longitude: 7.4138}, {latitude: 123, longitude: 123}, ...]
  @return		bool		true if the coordinate is inside the given polygon