Add documentation to repo

[devclinton]

• - Readme.md
• - Sphinx docs
• - Example of getting starts
• - Notebook?

[stitova-idm]

I made a PR for the bones of the Sphinx docs builds. They currently error out because they need all the modules installed and we do not install idmtools and other modules from the un-converted files, so it cannot run, but as soon as we're done with the conversion, we should be able to run it.
#46