* Update programming_guide.md (#664)

* Update programming_guide.md

* Update programming_guide_en.md

* Update cn api to 1.3 (#663)

* Update cn api to 1.3 fluid & layers

* Rest to 1.3

* Weeklyupdate 0301 (#666)

* Tables_rm_op

* update_op

* update_index

* update_book_0302 (#667)