updated readme to discuss re-rending views, Closes GH-18
updated readme to discuss re-rending views, Closes GH-18

SimenB/backbone.layoutmanager,GerHobbelt/backbone.layoutmanager,tbranyen/backbone.layoutmanager,huang-x-h/backbone.layoutmanager,huang-x-h/backbone.layoutmanager,tbranyen/backbone.layoutmanager,SimenB/backbone.layoutmanager