added better project description to README
added better project description to README
erichilarysmithsr/givinggraph,erichilarysmithsr/givinggraph,dssg/givinggraph,math4youbyusgroupillinois/givinggraph,dssg/givinggraph,math4youbyusgroupillinois/givinggraph,erichilarysmithsr/givinggraph,math4youbyusgroupillinois/givinggraph,dssg/givinggraph