Readme fixes.
Readme fixes.

alvations/lightfm,kidaa/lightfm,CamZHU/lightfm,rv816/lightfm,paoloRais/lightfm,shaunstanislaus/lightfm,maciejkula/lightfm,lyst/lightfm,Geoion/lightfm,igara432/lightfm,xuq/lightfm,wavelets/lightfm,lenovor/lightfm