add script to generate all non-code files automatically if they don't exist

[jeremymanning]

• setup.py (use folder name as name of project, and if any of the below are specified, change the script accordingly to reference them)

other info could be read from setup.py

• conf.py
• MANIFEST.in
• README.md
• requirements.txt
• license.txt
• basic test (so pytest can run)
• basic example (so sphinx compiles)
• api.rst
• index.rst
• tutorials.rst
• sample tutorial notebook

then output a "to do" list of how to:

• set up github web hooks for slack
• get travis configured
• compile sphinx web page
• register on readthedocs and publish readthedocs page
• do a github release
• set up forks on github for development (once package is "live," rather than modifying master branch directly)
• push to pip (after package is ready for release)
• install package from pip

[jeremymanning]

bonus points:

• output an admonishment if user is using python 2
• construct sample tweet