First commit of template GUIs

Rough representation of how the GUIs will eventually turn out.
Initial testing for passing figure handles to sort functions.

Also fixed a problem with MergeSort not recursing (still may not be
functional, though).
Fixed issue with MergeSort not recursing onto itself
Merge pull request #12 from ernstki/dev

Merge in changes from @ernstki's 'dev' branch (including figure handle tests)
Updated AlgorithmRace.fig (non-functional mockup)
Merge pull request #13 from ernstki/dev

Updated AlgorithmRace.fig (non-functional mockup)
Update README.md
Minor UI updates to AlgorithmRace.fig
Minor UI updates to AlgorithmRace.fig
Working UI for the upper-left plot

The "Input Characteristics" setting is hard-coded at "random," but
other than that, it works.
Cleaning up after a messy merge (dev -> master)
Add back `AlgorithmRace.fig`
Removed errant ctags file
Merge pull request #2 from ernstki/master

Provides a mockup of the "algorithm race" UI