Document development and deployment

[mattpap]

Development is partially explained in README.md. Need to document uploads to npm, anaconda cloud and pypi.

[bryevdv]

FYI need t upload to pypi w/ twine:

twine upload -u __token__ -p <token> <file>

Also we need to make a new token scoped to just this project and put it in 1pass

[bryevdv]

Need to document:

• conventions for dev versions
• python setup.py sdist bdist_wheel to build
• npm publish to publish to NPM
• set PYPI_TOKEN and twine upload -u __token__ -p $PYPI_TOKEN dist/jupyter_bokeh-* to publish to PyPI
• instructions for conda package (tbd)

It's possible the deploy.sh script can be used (or lightly fixed up) to do all this

cc @philippjfr

[bryevdv]

I'm going to close this and roll it in with #141