Create documentation site

[yubozhao]

What changes were proposed in this pull request?

Add documentation site for BentoML.

Does this close any currently open issues?

How was this patch tested?

[codecov-io]

Codecov Report

Merging #168 into master will decrease coverage by 0.09%.
The diff coverage is 50%.

@@           Coverage Diff            @@
##           master    #168     +/-   ##
========================================
- Coverage    62.6%   62.5%   -0.1%     
========================================
  Files          49      49             
  Lines        1976    1979      +3     
========================================
  Hits         1237    1237             
- Misses        739     742      +3

Impacted Files	Coverage Δ
bentoml/artifact/text_file_artifact.py	51.85% <ø> (ø)	⬆️
bentoml/artifact/pickle_artifact.py	96.77% <ø> (ø)	⬆️
bentoml/handlers/json_handler.py	80.55% <ø> (ø)	⬆️
bentoml/artifact/h2o_artifact.py	42.42% <ø> (ø)	⬆️
bentoml/archive/archiver.py	94.11% <ø> (ø)	⬆️
bentoml/artifact/xgboost_artifact.py	40% <ø> (ø)	⬆️
bentoml/archive/loader.py	83.33% <ø> (ø)	⬆️
bentoml/handlers/dataframe_handler.py	84.72% <ø> (ø)	⬆️
bentoml/service.py	88.34% <ø> (ø)	⬆️
bentoml/deployment/serverless/__init__.py	21.87% <0%> (-0.53%)	⬇️
... and 2 more

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[pep8speaks]

Hello @yubozhao, Thanks for updating this PR.

There are currently no PEP 8 issues detected in this PR. Cheers! 🍻

Comment last updated at 2019-06-19 18:49:23 UTC

[parano]

@yubozhao could you add docs deps to the dev dependencies list in setup.py, and also add instructions for building docs locally to development.md file?