update README (no more adapters)
update README (no more adapters)

stof/Geocoder,geocoder-php/Geocoder,geocoder-php/Geocoder,misterion/Geocoder,jmcclell/Geocoder,Nyholm/Geocoder,jollysean/Geocoder,arunlodhi/Geocoder,collmomo/Geocoder,xabbuh/Geocoder,svrdlic/Geocoder,svrdlic/Geocoder,Nyholm/Geocoder,heatery/Geocoder,mubassirhayat/Geocoder,shamyyl/Geocoder,tylerhebel/Geocoder