Add a simplification version flow in Spanish

Hi @andresmoschini I made a document that contains the explanation "Create branch", "Commit" and "Merge" in Git/TFS flow.

A preview is available at: http://federicocroce.github.io/makingsense.github.io/migration-to-git/4-flows/dp-flow-in-spanish/dp-flow-in-spanish.html
In my opinion, it is unnecessary. If it something that happen to you and could happen to another person, maybe it is better to rephrase it as a warning, something like: "Verificar estar posicionado en la rama deseada"