Added Matlab files
Added setplot2.m and afterframe.m for Matlab graphics
Fixed afterframe so that only non-empty levels are passed to the legend command
Added shg; don't draw noisy contour levels
Changed final time and number of output files to original settings
Show under/over shoots in swirl example
Added Matlab files for annulus example
Added Matlab files to 2d quadrants example
fixed merge conflict in examples/advection_2d_swirl/setrun.py
Merge pull request #79 from rjleveque/donnaaboise-2dExamples

Fixed a merge conflict in @donnaaboise 2dExamples PR#76