tutorial: shorthand for remotes but show distributed nature of git
tutorial: shorthand for remotes but show distributed nature of git

* Promiscous pull shows the distributed nature of git better.
* Add a new step after that to teach "remote add".
* Highlight that with the shorthand defined you will get
  remote tracking branches for free.
* Fix Alice's workflow.

Signed-off-by: Santi Béjar <618d5c06931bb914cb25a8dab62e9b51dbfacc2d@gmail.com>
Signed-off-by: Junio C Hamano <dc50d1021234060e53ec42a77d526afa2fe07479@cox.net>

destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git