Added support for Sphinx autodoc
Merge branch 'feature/initial_work' into feature/apidocs
add skeleton doc files, rework the Sphinx configuration, add docstrings to mit_lti_flask_sample.py
Begin adding more substance to the Heroku Deployment documentation.
Minor modifications to Documentation for tutorial.
pushing additional edits.
reordered tutorial sections
Added useful stuff to Documentation for tutorial.
pushing additional edits, enabled sphinx.todo extension.
Completed sections:
1. Create a new LTI project from the sample template
2. Deploy the sample (includes deploy_to_heroku.rst file)
Added section:
Exploring the LTI sample template
Added 'install cmd line tools' document.  Added more Heroku deployment instructions
added more content
Completed sections (currently untested):
 Create a Virtual Environment to explore the sample
 Explore the LTI sample template
Completed sections (successfully tested):
 Create a Virtual Environment to explore the sample
 Explore the LTI sample template
put line break after double colon markup (::) in response to review comment
in response to review comment, changed asterisks to carets for headings markup.
added license file for FreeBSD
Merge commit '1b3839545ddae1d1bff6ea2f09b85178bd32e1b9' into feature/heroku_deploy/doc
added use of Heroku 'create' command