Add FAQ for creating python package (#2107)
Add FAQ for creating python package (#2107)

* update docs

* update

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