Readme fixes.
Readme fixes.

eliz79/is210-week-10-warmup,neal-rogers/is210-week-10-warmup,Logan213/is210-week-10-warmup,is210-faculty/is210-week-10-warmup,ModestoCabrera/is210-week-10-warmup,eliz79/is210-week-10-warmup,is210-2015-fall-02/is210-week-10-warmup,ModestoCabrera/is210-week-10-warmup,is210-2015-fall-02/is210-week-10-warmup,neal-rogers/is210-week-10-warmup,is210-2015-fall-01/is210-week-10-warmup,is210-faculty/is210-week-10-warmup,is210-2015-fall-01/is210-week-10-warmup,Logan213/is210-week-10-warmup