[cherry-pick][release/1.1] add py3 wheel link

add py3 link

[cherry-pick][release/1.1]fix python wheel on bos

[Do Not Merge]add api in toctree

Fix internal links

Cherry pick about mobile readme

deleted recordio_writer.rst

update mobile doc (#278)

* update mobile doc

* Update mobile_readme.md

* Update mobile_dev.md

* Rename mobile_dev.md to development_ios.md

* Update index_mobile.rst

* Delete development_ios.md

* Update index_mobile.rst

* Update mobile_readme.md

cherry pick for shorten index page

cherry pick for data in and out

* refine avx info representation

* refine avx info representation

* refine avx info representation

* Update index_cn.rst

* Update index.rst

* Update index.rst

* Update executor.rst

* Update Developer's_Guide_to_Paddle_Fluid.md

* fix conv typo

* Update index.rst

* Update lod_tensor.md

* Update index.rst

fix conv typo

Update index.rst

Update install doc tag

Update install tag for 1.1.0