added footer
added footer

guoyu07/classroom,AlvarezAriel/classroom,jasnow/classroom,uqbar-project/classroom,mostlybadfly/classroom,nfeliciano/classroom,mkcode/classroom,guoyu07/classroom,BelieveC/classroom,tjhorner/classroom,jasnow/classroom,BelieveC/classroom,tjhorner/classroom,uqbar-project/classroom,alejandrogarciasalas/classroom,bhanuc/classroom,bhanuc/classroom,chengjunjian/classroom,chenwenbin928/classroom,jingruoruchu/classroom,chengjunjian/classroom,RyanTech/classroom,BelieveC/classroom,AlvarezAriel/classroom,nfeliciano/classroom,hackerkid/classroom,chengjunjian/classroom,mkcode/classroom,jasnow/classroom,sicipio/classroom,sicipio/classroom,uqbar-project/classroom,jingruoruchu/classroom,bhanuc/classroom,hackerkid/classroom,chenwenbin928/classroom,jingruoruchu/classroom,alejandrogarciasalas/classroom,alejandrogarciasalas/classroom,nfeliciano/classroom,mostlybadfly/classroom,ConnorCartwright/classroom,hackerkid/classroom,tjhorner/classroom,ConnorCartwright/classroom,ConnorCartwright/classroom,RyanTech/classroom,mkcode/classroom,guoyu07/classroom,chenwenbin928/classroom,sicipio/classroom,mostlybadfly/classroom,adoosii/classroom,BelieveC/classroom,adoosii/classroom,AlvarezAriel/classroom,adoosii/classroom,RyanTech/classroom