Add yarn cluster example command to the document website (#1978)
Add yarn cluster example command to the document website (#1978)


yiheng/BigDL,i8run/BigDL-1,qiuxin2012/BigDL,yiheng/BigDL,luchy0120/BigDL,wzhongyuan/BigDL,luchy0120/BigDL,zhangxiaoli73/BigDL,zhangxiaoli73/BigDL,yiheng/BigDL,wzhongyuan/BigDL,i8run/BigDL-1,luchy0120/BigDL,qiuxin2012/BigDL,i8run/BigDL-1,wzhongyuan/BigDL,qiuxin2012/BigDL,zhangxiaoli73/BigDL