* add patch does not trigger travis ci

* Init

* Add numpy deps

* Refine

* Init commit for doing FAQ

* Add speed up training

* Add graphviz to ci

* Add shared paramter

* Tiny refine

* Add documentation build to ci test
* Push master branch doc changes to gh-pages branch

* install wheels when invoke paddle script if current python don't
  have paddle packages, or installed a previous version.
* Also add `make install` to travis