Adds try except statement to get around a RuntimeError in our old friend, the generalized Yule distribution.
Merge remote-tracking branch 'upstream/master'
Adds elif statement to negative binomial section to see if the negbin solver is returning -inf.
Removes references to generalize Yule distribution, because that model fails to work correctly with the data the majority of the time, switches to run the full datasets through the script.
Sets up script for graphing the results of the competing species distribution models.
Merge pull request #17 from embaldridge/master

Working version, beginning of script for graphs.