updated readme to have links
updated readme to have links

tshrjn/courses,tylucaskelley/courses,tylucaskelley/courses,prateekjoshi2013/courses,mi1980/projecthadoop3,tai271828/courses,mi1980/projecthadoop3,prateekjoshi2013/courses,tai271828/courses,prateekjoshi2013/courses,tai271828/courses,tshrjn/courses,tylucaskelley/courses,mi1980/projecthadoop3,tshrjn/courses