Fixed readme typo with authorizer
Fixed readme typo with authorizer

danieljx/auth0-ember-simple-auth,danieljx/auth0-ember-simple-auth,trong291990/auth0-ember-simple-auth,Annyv2/auth0-ember-simple-auth,trong291990/auth0-ember-simple-auth,auth0/auth0-ember-simple-auth,auth0/auth0-ember-simple-auth,Annyv2/auth0-ember-simple-auth