Update config.mk
Update config.mk

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