Change to using User-Name header for username
Change to using User-Name header for username

Need to add hack that just appends an incrementing number if the
username is taken

ashwini-angular/lets-chat,neynah/lets-chat,jparyani/lets-chat,ashwini-angular/lets-chat,neynah/lets-chat,jparyani/lets-chat,neynah/lets-chat,jparyani/lets-chat,ashwini-angular/lets-chat