New DCA/DP flow including git-tfs

Hi Team, maybe it is useful for some other project that have to use Git and TFS together.

@matiasbeckerle, @gkolocsar, @gastonmancini. @jfazzini it is the updated flow to use Git in our projects, it is a simplified version of our previous flow.
Mmm, maybe you can help me to explan it better.

There are two main github remotes: 

* `upstream`: common repository for all the team it has `develop`, `integration`, `qa`, and _version tags_ branches, basically a copy of TFS repository
* `origin`: developer's fork, it has _feature branches_ used by the developer.

Do you have an idea about how to improve original text?