git emberjs/rails - Best practice for pushing both frameworks up to a single repo

I just started building a rails/ember app and it's the first time i'm using two different frameworks with a single app. I was wondering whats the best practical way to manage version control? I currently have a local repository for each framework ( 1 for ember and 1 for rails). I am pushing up to two separate branches to a single repository on github. masterRails for the rails side and masterEmber for Ember.

Thanks for the advice!!