add tutorial for class activation maps (#3720)
add tutorial for class activation maps (#3720)


navrasio/mxnet,coder-james/mxnet,wangyum/mxnet,reminisce/mxnet,LinkHS/incubator-mxnet,Guneet-Dhillon/mxnet,sxjscience/mxnet,hesseltuinhof/mxnet,apaleyes/mxnet,tornadomeet/mxnet,thirdwing/mxnet,ForkedReposBak/mxnet,lxn2/mxnet,likelyzhao/mxnet,nicklhy/mxnet,lxn2/mxnet,jamesliu/mxnet,arikpoz/mxnet,szha/mxnet,luoyetx/mxnet,precedenceguo/mxnet,danithaca/mxnet,Mega-DatA-Lab/mxnet,piiswrong/mxnet,ykim362/mxnet,tornadomeet/mxnet,jermainewang/mxnet,szha/mxnet,ForkedReposBak/mxnet,CodingCat/mxnet,nicklhy/mxnet,TuSimple/mxnet,gautamkmr/incubator-mxnet,kevinthesun/mxnet,luoyetx/mxnet,jermainewang/mxnet,precedenceguo/mxnet,Guneet-Dhillon/mxnet,weleen/mxnet,jennyzhang0215/incubator-mxnet,crazy-cat/incubator-mxnet,eric-haibin-lin/mxnet,ykim362/mxnet,smolix/incubator-mxnet,vikingMei/mxnet,TuSimple/mxnet,zhreshold/mxnet,sxjscience/mxnet,stefanhenneking/mxnet,smolix/incubator-mxnet,arank/mxnet,sergeykolychev/mxnet,formath/mxnet,smolix/incubator-mxnet,jermainewang/mxnet,ptrendx/mxnet,pluskid/mxnet,likelyzhao/mxnet,rahul003/mxnet,tlby/mxnet,jennyzhang0215/incubator-mxnet,lxn2/mxnet,yuruofeifei/mxnet,saurabh3949/mxnet,LinkHS/incubator-mxnet,fullfanta/mxnet,solin319/incubator-mxnet,coder-james/mxnet,EvanzzzZ/mxnet,yajiedesign/mxnet,leezu/mxnet,rahul003/mxnet,piiswrong/mxnet,tlby/mxnet,hesseltuinhof/mxnet,hesseltuinhof/mxnet,LinkHS/incubator-mxnet,danithaca/mxnet,eric-haibin-lin/mxnet,Prasad9/incubator-mxnet,LinkHS/incubator-mxnet,madjam/mxnet,leezu/mxnet,formath/mxnet,reminisce/mxnet,ptrendx/mxnet,xcgoner/dist-mxnet,fullfanta/mxnet,hesseltuinhof/mxnet,tornadomeet/mxnet,coder-james/mxnet,rahul003/mxnet,wangyum/mxnet,tlby/mxnet,mbaijal/incubator-mxnet,mbaijal/incubator-mxnet,apaleyes/mxnet,Ldpe2G/mxnet,CodingCat/mxnet,piiswrong/mxnet,mbaijal/incubator-mxnet,smolix/incubator-mxnet,crazy-cat/incubator-mxnet,eric-haibin-lin/mxnet,TuSimple/mxnet,ShownX/incubator-mxnet,arank/mxnet,EvanzzzZ/mxnet,hotpxl/mxnet,yuruofeifei/mxnet,vikingMei/mxnet,vikingMei/mxnet,CodingCat/mxnet,DR08/mxnet,formath/mxnet,coder-james/mxnet,rishita/mxnet,Guneet-Dhillon/mxnet,formath/mxnet,lxn2/mxnet,weleen/mxnet,luoyetx/mxnet,wangyum/mxnet,likelyzhao/mxnet,xcgoner/dist-mxnet,jennyzhang0215/incubator-mxnet,luoyetx/mxnet,thirdwing/mxnet,Mega-DatA-Lab/mxnet,Mega-DatA-Lab/mxnet,yuruofeifei/mxnet,vikingMei/mxnet,coder-james/mxnet,LinkHS/incubator-mxnet,xcgoner/dist-mxnet,luoyetx/mxnet,ZihengJiang/mxnet,ptrendx/mxnet,coder-james/mxnet,likelyzhao/mxnet,dmlc/mxnet,pluskid/mxnet,larroy/mxnet,Guneet-Dhillon/mxnet,thirdwing/mxnet,xcgoner/dist-mxnet,piiswrong/mxnet,thirdwing/mxnet,rishita/mxnet,indhub/mxnet,saurabh3949/mxnet,crazy-cat/incubator-mxnet,rishita/mxnet,madjam/mxnet,yajiedesign/mxnet,sxjscience/mxnet,zhreshold/mxnet,apache/incubator-mxnet,tornadomeet/mxnet,jamesliu/mxnet,solin319/incubator-mxnet,LinkHS/incubator-mxnet,Ldpe2G/mxnet,DR08/mxnet,thirdwing/mxnet,jennyzhang0215/incubator-mxnet,sxjscience/mxnet,navrasio/mxnet,Prasad9/incubator-mxnet,stefanhenneking/mxnet,tlby/mxnet,yajiedesign/mxnet,arikpoz/mxnet,thirdwing/mxnet,larroy/mxnet,hesseltuinhof/mxnet,apaleyes/mxnet,arikpoz/mxnet,dmlc/mxnet,szha/mxnet,DickJC123/mxnet,rishita/mxnet,hpi-xnor/BMXNet,ZihengJiang/mxnet,jennyzhang0215/incubator-mxnet,gautamkmr/incubator-mxnet,jermainewang/mxnet,larroy/mxnet,danithaca/mxnet,CodingCat/mxnet,TuSimple/mxnet,Ldpe2G/mxnet,gautamkmr/incubator-mxnet,rishita/mxnet,ShownX/incubator-mxnet,nicklhy/mxnet,DickJC123/mxnet,EvanzzzZ/mxnet,likelyzhao/mxnet,eric-haibin-lin/mxnet,Mega-DatA-Lab/mxnet,kkk669/mxnet,sxjscience/mxnet,pluskid/mxnet,zhreshold/mxnet,arikpoz/mxnet,nicklhy/mxnet,solin319/incubator-mxnet,jiajiechen/mxnet,nicklhy/mxnet,weleen/mxnet,lxn2/mxnet,ptrendx/mxnet,jiajiechen/mxnet,reminisce/mxnet,sergeykolychev/mxnet,Guneet-Dhillon/mxnet,pluskid/mxnet,CodingCat/mxnet,kevinthesun/mxnet,likelyzhao/mxnet,fullfanta/mxnet,apaleyes/mxnet,dmlc/mxnet,rishita/mxnet,tornadomeet/mxnet,dmlc/mxnet,yajiedesign/mxnet,smolix/incubator-mxnet,Northrend/mxnet,szha/mxnet,TuSimple/mxnet,CodingCat/mxnet,TuSimple/mxnet,jermainewang/mxnet,ykim362/mxnet,hotpxl/mxnet,crazy-cat/incubator-mxnet,DR08/mxnet,Mega-DatA-Lab/mxnet,rahul003/mxnet,EvanzzzZ/mxnet,eric-haibin-lin/mxnet,Northrend/mxnet,arank/mxnet,kevinthesun/mxnet,EvanzzzZ/mxnet,solin319/incubator-mxnet,LinkHS/incubator-mxnet,fullfanta/mxnet,luoyetx/mxnet,stefanhenneking/mxnet,zhreshold/mxnet,rahul003/mxnet,dmlc/mxnet,ZihengJiang/mxnet,wangyum/mxnet,szha/mxnet,navrasio/mxnet,gautamkmr/incubator-mxnet,larroy/mxnet,sergeykolychev/mxnet,leezu/mxnet,eric-haibin-lin/mxnet,crazy-cat/incubator-mxnet,yajiedesign/mxnet,Prasad9/incubator-mxnet,yajiedesign/mxnet,vikingMei/mxnet,DR08/mxnet,hpi-xnor/BMXNet,jermainewang/mxnet,reminisce/mxnet,fullfanta/mxnet,danithaca/mxnet,danithaca/mxnet,hpi-xnor/BMXNet,yuruofeifei/mxnet,jermainewang/mxnet,arikpoz/mxnet,sergeykolychev/mxnet,rahul003/mxnet,arikpoz/mxnet,kevinthesun/mxnet,jermainewang/mxnet,Northrend/mxnet,hotpxl/mxnet,reminisce/mxnet,Prasad9/incubator-mxnet,vikingMei/mxnet,ForkedReposBak/mxnet,solin319/incubator-mxnet,DickJC123/mxnet,precedenceguo/mxnet,stefanhenneking/mxnet,tlby/mxnet,Guneet-Dhillon/mxnet,rahul003/mxnet,reminisce/mxnet,jennyzhang0215/incubator-mxnet,jiajiechen/mxnet,tlby/mxnet,yajiedesign/mxnet,larroy/mxnet,larroy/mxnet,tornadomeet/mxnet,gautamkmr/incubator-mxnet,jiajiechen/mxnet,reminisce/mxnet,ForkedReposBak/mxnet,leezu/mxnet,crazy-cat/incubator-mxnet,reminisce/mxnet,precedenceguo/mxnet,zhreshold/mxnet,Prasad9/incubator-mxnet,mbaijal/incubator-mxnet,tornadomeet/mxnet,kevinthesun/mxnet,EvanzzzZ/mxnet,indhub/mxnet,eric-haibin-lin/mxnet,yuruofeifei/mxnet,dmlc/mxnet,jamesliu/mxnet,ptrendx/mxnet,larroy/mxnet,piiswrong/mxnet,Prasad9/incubator-mxnet,antoan2/incubator-mxnet,Northrend/mxnet,coder-james/mxnet,indhub/mxnet,jamesliu/mxnet,thirdwing/mxnet,precedenceguo/mxnet,Northrend/mxnet,DR08/mxnet,gautamkmr/incubator-mxnet,rahul003/mxnet,hotpxl/mxnet,gautamkmr/incubator-mxnet,yuruofeifei/mxnet,wangyum/mxnet,Prasad9/incubator-mxnet,kkk669/mxnet,apache/incubator-mxnet,tornadomeet/mxnet,kkk669/mxnet,hpi-xnor/BMXNet,nicklhy/mxnet,kkk669/mxnet,larroy/mxnet,Ldpe2G/mxnet,jamesliu/mxnet,Ldpe2G/mxnet,LinkHS/incubator-mxnet,ptrendx/mxnet,antoan2/incubator-mxnet,indhub/mxnet,apaleyes/mxnet,stefanhenneking/mxnet,larroy/mxnet,thirdwing/mxnet,rishita/mxnet,Northrend/mxnet,DR08/mxnet,kevinthesun/mxnet,navrasio/mxnet,coder-james/mxnet,apache/incubator-mxnet,solin319/incubator-mxnet,madjam/mxnet,ShownX/incubator-mxnet,arank/mxnet,ZihengJiang/mxnet,szha/mxnet,TuSimple/mxnet,ptrendx/mxnet,weleen/mxnet,saurabh3949/mxnet,Ldpe2G/mxnet,kevinthesun/mxnet,ShownX/incubator-mxnet,crazy-cat/incubator-mxnet,yuruofeifei/mxnet,formath/mxnet,wangyum/mxnet,hotpxl/mxnet,sergeykolychev/mxnet,mbaijal/incubator-mxnet,ykim362/mxnet,lxn2/mxnet,weleen/mxnet,jennyzhang0215/incubator-mxnet,solin319/incubator-mxnet,jamesliu/mxnet,indhub/mxnet,hotpxl/mxnet,stefanhenneking/mxnet,ykim362/mxnet,fullfanta/mxnet,zhreshold/mxnet,CodingCat/mxnet,madjam/mxnet,Guneet-Dhillon/mxnet,ZihengJiang/mxnet,EvanzzzZ/mxnet,reminisce/mxnet,reminisce/mxnet,xcgoner/dist-mxnet,hesseltuinhof/mxnet,antoan2/incubator-mxnet,formath/mxnet,kkk669/mxnet,jiajiechen/mxnet,crazy-cat/incubator-mxnet,danithaca/mxnet,ykim362/mxnet,szha/mxnet,thirdwing/mxnet,luoyetx/mxnet,ptrendx/mxnet,Prasad9/incubator-mxnet,kevinthesun/mxnet,xcgoner/dist-mxnet,sergeykolychev/mxnet,kkk669/mxnet,CodingCat/mxnet,sergeykolychev/mxnet,piiswrong/mxnet,smolix/incubator-mxnet,apaleyes/mxnet,kkk669/mxnet,EvanzzzZ/mxnet,mbaijal/incubator-mxnet,apaleyes/mxnet,antoan2/incubator-mxnet,rishita/mxnet,arikpoz/mxnet,jiajiechen/mxnet,TuSimple/mxnet,nicklhy/mxnet,jamesliu/mxnet,ForkedReposBak/mxnet,ShownX/incubator-mxnet,Mega-DatA-Lab/mxnet,smolix/incubator-mxnet,lxn2/mxnet,zhreshold/mxnet,pluskid/mxnet,piiswrong/mxnet,jennyzhang0215/incubator-mxnet,jamesliu/mxnet,Northrend/mxnet,hotpxl/mxnet,likelyzhao/mxnet,DR08/mxnet,leezu/mxnet,indhub/mxnet,weleen/mxnet,dmlc/mxnet,antoan2/incubator-mxnet,luoyetx/mxnet,likelyzhao/mxnet,pluskid/mxnet,stefanhenneking/mxnet,navrasio/mxnet,stefanhenneking/mxnet,yuruofeifei/mxnet,Guneet-Dhillon/mxnet,Mega-DatA-Lab/mxnet,hpi-xnor/BMXNet,saurabh3949/mxnet,formath/mxnet,CodingCat/mxnet,mbaijal/incubator-mxnet,fullfanta/mxnet,hesseltuinhof/mxnet,leezu/mxnet,arank/mxnet,danithaca/mxnet,precedenceguo/mxnet,apache/incubator-mxnet,madjam/mxnet,sergeykolychev/mxnet,indhub/mxnet,sxjscience/mxnet,precedenceguo/mxnet,dmlc/mxnet,ZihengJiang/mxnet,hpi-xnor/BMXNet,jermainewang/mxnet,leezu/mxnet,antoan2/incubator-mxnet,kkk669/mxnet,ForkedReposBak/mxnet,DR08/mxnet,jamesliu/mxnet,navrasio/mxnet,danithaca/mxnet,saurabh3949/mxnet,navrasio/mxnet,zhreshold/mxnet,gautamkmr/incubator-mxnet,xcgoner/dist-mxnet,TuSimple/mxnet,ptrendx/mxnet,ykim362/mxnet,dmlc/mxnet,ShownX/incubator-mxnet,rishita/mxnet,kkk669/mxnet,wangyum/mxnet,szha/mxnet,Northrend/mxnet,luoyetx/mxnet,Ldpe2G/mxnet,jiajiechen/mxnet,coder-james/mxnet,formath/mxnet,hesseltuinhof/mxnet,hotpxl/mxnet,apaleyes/mxnet,szha/mxnet,crazy-cat/incubator-mxnet,tlby/mxnet,jiajiechen/mxnet,hpi-xnor/BMXNet,kevinthesun/mxnet,weleen/mxnet,Northrend/mxnet,sxjscience/mxnet,formath/mxnet,ForkedReposBak/mxnet,fullfanta/mxnet,hesseltuinhof/mxnet,hotpxl/mxnet,TuSimple/mxnet,vikingMei/mxnet,smolix/incubator-mxnet,hpi-xnor/BMXNet,navrasio/mxnet,ShownX/incubator-mxnet,gautamkmr/incubator-mxnet,xcgoner/dist-mxnet,jiajiechen/mxnet,solin319/incubator-mxnet,lxn2/mxnet,arank/mxnet,ZihengJiang/mxnet,piiswrong/mxnet,pluskid/mxnet,antoan2/incubator-mxnet,eric-haibin-lin/mxnet,hpi-xnor/BMXNet,vikingMei/mxnet,sxjscience/mxnet,pluskid/mxnet,solin319/incubator-mxnet,Mega-DatA-Lab/mxnet,Guneet-Dhillon/mxnet,madjam/mxnet,eric-haibin-lin/mxnet,saurabh3949/mxnet,arank/mxnet,piiswrong/mxnet,Mega-DatA-Lab/mxnet,arank/mxnet,ShownX/incubator-mxnet,ForkedReposBak/mxnet,leezu/mxnet,wangyum/mxnet,tlby/mxnet,Ldpe2G/mxnet,leezu/mxnet,danithaca/mxnet,tlby/mxnet,vikingMei/mxnet,antoan2/incubator-mxnet,xcgoner/dist-mxnet,madjam/mxnet,wangyum/mxnet,Prasad9/incubator-mxnet,weleen/mxnet,weleen/mxnet,EvanzzzZ/mxnet,stefanhenneking/mxnet,arikpoz/mxnet,madjam/mxnet,saurabh3949/mxnet,Ldpe2G/mxnet,madjam/mxnet,saurabh3949/mxnet,precedenceguo/mxnet,smolix/incubator-mxnet,ykim362/mxnet,ZihengJiang/mxnet,antoan2/incubator-mxnet,ptrendx/mxnet,precedenceguo/mxnet,mbaijal/incubator-mxnet,apaleyes/mxnet,rahul003/mxnet,likelyzhao/mxnet,arank/mxnet,ShownX/incubator-mxnet,nicklhy/mxnet,sergeykolychev/mxnet,arikpoz/mxnet,lxn2/mxnet,fullfanta/mxnet,LinkHS/incubator-mxnet,indhub/mxnet,nicklhy/mxnet,sxjscience/mxnet,ZihengJiang/mxnet,zhreshold/mxnet,yajiedesign/mxnet,pluskid/mxnet,yajiedesign/mxnet,navrasio/mxnet,ykim362/mxnet,jennyzhang0215/incubator-mxnet,yuruofeifei/mxnet,tlby/mxnet,indhub/mxnet,tornadomeet/mxnet,DickJC123/mxnet,saurabh3949/mxnet,DR08/mxnet,ForkedReposBak/mxnet,mbaijal/incubator-mxnet