Use IDEA's graphical display of the branches

[NicMcPhee]

The only part of IDEA's version control tool that I showed in the video was the panel that showed local changes. I really should use the graphical display that shows commits and branches as I think that does a very nice job of illustrating the what's happening. This is true at the beginning (we can see the commits as they happen), but is especially true when we get to the branching in the second half.

If I do this, I really should have "KK's" commits in the second half actually happen in a separate branch so that branch shows up in the diagram. (I actually just did all "KK's" work in master since I knew that no one would "see" it.)