add note about new select collection bindings
add note about new select collection bindings

akre54/backbone.stickit,Krasnyanskiy/backbone.stickit,akre54/backbone.stickit,adam-26/backbone.stickit,adam-26/backbone.stickit,NYTimes/backbone.stickit,NYTimes/backbone.stickit,Krasnyanskiy/backbone.stickit