Updated README - composer autoloading
Updated README - composer autoloading

No longer need special treatment for HybridAuth autloading
Lansoweb/ScnSocialAuth,SocalNick/ScnSocialAuth,Ocramius/ScnSocialAuth,SocalNick/ScnSocialAuth,shinesoftware/ScnSocialAuth,mehrWEB/ScnSocialAuth,mehrWEB/ScnSocialAuth,khounnouk/ScnSocialAuth,Lansoweb/ScnSocialAuth,TomHAnderson/ScnSocialAuth,khounnouk/ScnSocialAuth,TomHAnderson/ScnSocialAuth,stijnhau/ScnSocialAuth,stijnhau/ScnSocialAuth,shinesoftware/ScnSocialAuth