Placed quick_contribution_tutorial.rst under tutorials and updated it for rst file format.
Placed quick_contribution_tutorial.rst under tutorials and updated it for rst file format.
added another pull request image
moved discussion of git v1.7.1 to another document
edited links between tutorial and tutorial addendum. This version is probably ready for merging.
Merge pull request #2 from brisbind/master

quick_contribution_tutorial to here