added screenshot to readme
added screenshot to readme
dssg/givinggraph,dssg/givinggraph,erichilarysmithsr/givinggraph,math4youbyusgroupillinois/givinggraph,erichilarysmithsr/givinggraph,dssg/givinggraph,erichilarysmithsr/givinggraph,math4youbyusgroupillinois/givinggraph,math4youbyusgroupillinois/givinggraph