Add instuctions for running script at end of best practice
adds an aside about integer division and types
added nosetests in ipython
Merge pull request #131 from gidden/div

adds an aside about integer division and types
Add discussion of rebase & merge to git remote.
Merge pull request #133 from gonuke/add_rebase_merge_discussion

Add discussion of rebase & merge to git remote.
Merge pull request #130 from gonuke/run_csv_script

Add instuctions for running script at end of best practice