update README
update README

stefanocudini/leaflet-search,stefanocudini/leaflet-search,timophey/leaflet-search,ajvol/leaflet-search,aarontract/leaflet-search,ajvol/leaflet-search,kyroskoh/leaflet-search,aarontract/leaflet-search,johan--/leaflet-search,MuellerMatthew/leaflet-search,MuellerMatthew/leaflet-search,kyroskoh/leaflet-search,MuellerMatthew/leaflet-search,timophey/leaflet-search,cityhubla/leaflet-search,cityhubla/leaflet-search,johan--/leaflet-search