Set default for zeros argument and updated doc string for rand_parts()
Set default for method to best on rand_parts()
Fix typos in rand_parts() for method == 'best'
NrParts() update to reflect update in python code
Fix typo
Update to reflect changes in python code up to the NrParts() function
Merge pull request #4 from dmcglinn/master

Minor changes to python code and start of R code edits