Chagne textclassifier readme (#2105)
Chagne textclassifier readme (#2105)

* chagne textclassifier readme

* update core

yangw1234/BigDL,yangw1234/BigDL,yangw1234/BigDL,intel-analytics/BigDL,yangw1234/BigDL,intel-analytics/BigDL,intel-analytics/BigDL,intel-analytics/BigDL