Add note on branching and pull requests
Add note on branching and pull requests

kirill-zhirnov/backgrid,bryce-gibson/backgrid,aboieriu/backgrid,qferr/backgrid,digideskio/backgrid,digideskio/backgrid,kirill-zhirnov/backgrid,ludoo0d0a/backgrid,qferr/backgrid,crealytics/backgrid,blackducksoftware/backgrid,bryce-gibson/backgrid,ludoo0d0a/backgrid,goodwall/backgrid,Acquisio/backgrid,getjaco/backgrid,blackducksoftware/backgrid,aboieriu/backgrid,goodwall/backgrid,getjaco/backgrid,wyuenho/backgrid,jesseditson/backgrid,jesseditson/backgrid,wyuenho/backgrid,Acquisio/backgrid