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.
Oh, just understood it. After reading everything I had the idea that `origin` was just another name for `upstream`. Maybe a simple way of explaining it is some small set of definitions at the beginning? I imagine something like this:

> Since there are going to be several repositories involved, both owned for the developer, for TFS and the local copies, this is what references will be called during this document:
> - `upstream`: Will be the reference to the MakingSense main repository for the project, which has references to TFS
> - `origin`: Will be the reference to the developer's repository in GitHub