Adds number of sites per dataset to table.
Merge remote-tracking branch 'upstream/master'
Adds Zipf distribution to list of things being tested.
Changes processing to include the Zipf distribution.
Starts modifying graphs to include the Zipf distribution.
Fixes call for Zipf likelihood function.
Does not recalulate relative likelihood if AICc parameters = 1.
Merge pull request #63 from embaldridge/master

Adds Zipf distribution