this is Edgar Scott's homework
- git init -- initilizes a git repository on your machine
- git remote add origin https://github.com/iamarf/datasciencecoursera -- I forget what this does
- git add . -- adds everything that is "new" to a list of soon-to-be-committed files
- git commit -a -- commits everything set to be committed
- git push -u origin master -- sync your git repository on your desktop with your github account
- git commit -m -- I forget what this does