Developed a basic model using numpy, not sure if calculation is totally correct
Made SEIR model using numpy
Added new models
Merge branch 'exp' of github.com:jzelner/epibayes into ChrisExp
Added sphinx docstrings and updated how sampling probabilities are calculated
Basic commenting changes
Added my test files to commit
Merged ChrisExp branch with exp branch; easiest way is to switch into exp branch and do a git merge exp.  Also, updated GSP so that groups are accounted for
Merged with current branch head