Merge pull request #8 from dmcglinn/master

Update R code with additional minor changes to python code.
Merge pull request #10 from dmcglinn/master

Update top_down function in the R code.
Added two scripts for computing a random partition using python and sage. These scripts are for computing the amount of time it takes to compute a partition
Update README.md
Update README.md
Merge remote-tracking branch 'upstream/master'