Add ax keyword to aperture plots
Create sphinx link to matplotlib in plot docs
Set aperture plot fill default to False
Merge pull request #115 from larrybradley/plot_updates

Add ax keyword to aperture plots
Updating example
Setting source detection threshold at data background level
Adding plot
Adding plot and plot source
Adding some text
Addressing PR comments
Using inverse grayscale
Using astropy.stat for MAD
Using smaller image cut-out
Fixing pixel offset