Update NT readme.
Update NT readme.

ovr/postgres-xl,royc1/gpdb,Postgres-XL/Postgres-XL,jmcatamney/gpdb,lisakowen/gpdb,50wu/gpdb,lisakowen/gpdb,jmcatamney/gpdb,snaga/postgres-xl,techdragon/Postgres-XL,arcivanov/postgres-xl,greenplum-db/gpdb,janebeckman/gpdb,lpetrov-pivotal/gpdb,0x0FFF/gpdb,pavanvd/postgres-xl,kaknikhil/gpdb,randomtask1155/gpdb,xuegang/gpdb,Quikling/gpdb,yuanzhao/gpdb,0x0FFF/gpdb,xuegang/gpdb,ashwinstar/gpdb,Chibin/gpdb,zeroae/postgres-xl,lintzc/gpdb,ashwinstar/gpdb,chrishajas/gpdb,ashwinstar/gpdb,adam8157/gpdb,yuanzhao/gpdb,ashwinstar/gpdb,Chibin/gpdb,CraigHarris/gpdb,lintzc/gpdb,rvs/gpdb,ahachete/gpdb,ahachete/gpdb,techdragon/Postgres-XL,Quikling/gpdb,zaksoup/gpdb,CraigHarris/gpdb,foyzur/gpdb,janebeckman/gpdb,kaknikhil/gpdb,50wu/gpdb,rvs/gpdb,jmcatamney/gpdb,yazun/postgres-xl,tangp3/gpdb,adam8157/gpdb,adam8157/gpdb,kmjungersen/PostgresXL,yuanzhao/gpdb,CraigHarris/gpdb,randomtask1155/gpdb,ahachete/gpdb,arcivanov/postgres-xl,chrishajas/gpdb,Chibin/gpdb,cjcjameson/gpdb,postmind-net/postgres-xl,lintzc/gpdb,50wu/gpdb,zeroae/postgres-xl,oberstet/postgres-xl,lisakowen/gpdb,jmcatamney/gpdb,ashwinstar/gpdb,arcivanov/postgres-xl,atris/gpdb,foyzur/gpdb,postmind-net/postgres-xl,kaknikhil/gpdb,CraigHarris/gpdb,ashwinstar/gpdb,xuegang/gpdb,rubikloud/gpdb,edespino/gpdb,Postgres-XL/Postgres-XL,oberstet/postgres-xl,edespino/gpdb,Chibin/gpdb,lisakowen/gpdb,kmjungersen/PostgresXL,kmjungersen/PostgresXL,adam8157/gpdb,lpetrov-pivotal/gpdb,kaknikhil/gpdb,tangp3/gpdb,kaknikhil/gpdb,tpostgres-projects/tPostgres,yuanzhao/gpdb,50wu/gpdb,royc1/gpdb,xinzweb/gpdb,Quikling/gpdb,tangp3/gpdb,royc1/gpdb,xuegang/gpdb,50wu/gpdb,techdragon/Postgres-XL,rvs/gpdb,tpostgres-projects/tPostgres,Quikling/gpdb,Chibin/gpdb,janebeckman/gpdb,0x0FFF/gpdb,edespino/gpdb,CraigHarris/gpdb,cjcjameson/gpdb,atris/gpdb,xinzweb/gpdb,yuanzhao/gpdb,lintzc/gpdb,ahachete/gpdb,tangp3/gpdb,adam8157/gpdb,kaknikhil/gpdb,zaksoup/gpdb,tangp3/gpdb,zaksoup/gpdb,ovr/postgres-xl,lintzc/gpdb,greenplum-db/gpdb,randomtask1155/gpdb,yazun/postgres-xl,yuanzhao/gpdb,foyzur/gpdb,postmind-net/postgres-xl,postmind-net/postgres-xl,rvs/gpdb,CraigHarris/gpdb,greenplum-db/gpdb,lisakowen/gpdb,postmind-net/postgres-xl,pavanvd/postgres-xl,foyzur/gpdb,snaga/postgres-xl,randomtask1155/gpdb,xinzweb/gpdb,greenplum-db/gpdb,lintzc/gpdb,adam8157/gpdb,janebeckman/gpdb,50wu/gpdb,CraigHarris/gpdb,lintzc/gpdb,edespino/gpdb,atris/gpdb,xuegang/gpdb,arcivanov/postgres-xl,ovr/postgres-xl,pavanvd/postgres-xl,xuegang/gpdb,royc1/gpdb,chrishajas/gpdb,Chibin/gpdb,kmjungersen/PostgresXL,ashwinstar/gpdb,atris/gpdb,Postgres-XL/Postgres-XL,ovr/postgres-xl,techdragon/Postgres-XL,snaga/postgres-xl,royc1/gpdb,cjcjameson/gpdb,greenplum-db/gpdb,0x0FFF/gpdb,lpetrov-pivotal/gpdb,janebeckman/gpdb,arcivanov/postgres-xl,chrishajas/gpdb,50wu/gpdb,cjcjameson/gpdb,royc1/gpdb,kaknikhil/gpdb,ovr/postgres-xl,atris/gpdb,chrishajas/gpdb,xinzweb/gpdb,randomtask1155/gpdb,zaksoup/gpdb,rubikloud/gpdb,rvs/gpdb,Postgres-XL/Postgres-XL,rvs/gpdb,rvs/gpdb,Quikling/gpdb,yuanzhao/gpdb,tangp3/gpdb,randomtask1155/gpdb,atris/gpdb,arcivanov/postgres-xl,kmjungersen/PostgresXL,snaga/postgres-xl,Chibin/gpdb,royc1/gpdb,lintzc/gpdb,CraigHarris/gpdb,rvs/gpdb,lisakowen/gpdb,greenplum-db/gpdb,royc1/gpdb,kaknikhil/gpdb,snaga/postgres-xl,lpetrov-pivotal/gpdb,oberstet/postgres-xl,lpetrov-pivotal/gpdb,foyzur/gpdb,chrishajas/gpdb,janebeckman/gpdb,rubikloud/gpdb,jmcatamney/gpdb,adam8157/gpdb,greenplum-db/gpdb,randomtask1155/gpdb,cjcjameson/gpdb,xuegang/gpdb,50wu/gpdb,xinzweb/gpdb,oberstet/postgres-xl,Quikling/gpdb,rubikloud/gpdb,lintzc/gpdb,edespino/gpdb,pavanvd/postgres-xl,jmcatamney/gpdb,xinzweb/gpdb,0x0FFF/gpdb,randomtask1155/gpdb,zaksoup/gpdb,kaknikhil/gpdb,tpostgres-projects/tPostgres,yazun/postgres-xl,oberstet/postgres-xl,tangp3/gpdb,techdragon/Postgres-XL,yazun/postgres-xl,CraigHarris/gpdb,yuanzhao/gpdb,lisakowen/gpdb,Chibin/gpdb,edespino/gpdb,janebeckman/gpdb,0x0FFF/gpdb,foyzur/gpdb,cjcjameson/gpdb,rvs/gpdb,cjcjameson/gpdb,tpostgres-projects/tPostgres,Quikling/gpdb,janebeckman/gpdb,Chibin/gpdb,chrishajas/gpdb,zaksoup/gpdb,kaknikhil/gpdb,lpetrov-pivotal/gpdb,zeroae/postgres-xl,janebeckman/gpdb,xuegang/gpdb,edespino/gpdb,cjcjameson/gpdb,ashwinstar/gpdb,0x0FFF/gpdb,foyzur/gpdb,edespino/gpdb,cjcjameson/gpdb,Quikling/gpdb,edespino/gpdb,Quikling/gpdb,zaksoup/gpdb,ahachete/gpdb,ahachete/gpdb,yuanzhao/gpdb,rubikloud/gpdb,greenplum-db/gpdb,rubikloud/gpdb,xuegang/gpdb,tangp3/gpdb,adam8157/gpdb,foyzur/gpdb,yazun/postgres-xl,Quikling/gpdb,rubikloud/gpdb,zeroae/postgres-xl,jmcatamney/gpdb,xinzweb/gpdb,ahachete/gpdb,edespino/gpdb,yuanzhao/gpdb,atris/gpdb,pavanvd/postgres-xl,lpetrov-pivotal/gpdb,atris/gpdb,chrishajas/gpdb,zaksoup/gpdb,0x0FFF/gpdb,jmcatamney/gpdb,cjcjameson/gpdb,lisakowen/gpdb,Postgres-XL/Postgres-XL,rubikloud/gpdb,janebeckman/gpdb,ahachete/gpdb,rvs/gpdb,lpetrov-pivotal/gpdb,tpostgres-projects/tPostgres,Chibin/gpdb,zeroae/postgres-xl,xinzweb/gpdb