Bringing README and example files into line, and updating Makefile to match templates
Subtitling page layout
Adding discussion page
Renaming `sterile` target in Makefile to `very-clean`.

And taking it out of the auto-displayed list of available commands.
Adding more detail to the setup instructions based on instructor feedback.

1.  Moving the build steps up to the top of `README.md`.
2.  Removed the misleading target to run the checking tool (since the tool doesn't actually work).
Fixing typo in example file
Merge pull request #19 from gvwilson/gh-pages

Multiple changes based on converting Make lesson to template
Merge pull request #20 from gvwilson/improving-setup-instructions

Improving setup instructions
Using an enumerated list for the table of contents
Bringing example file containing glossary in line with README
Add small script to setup label in lesson repo

The script make easy to create the labels and keep it compatible
across repositories.
Improve script to setup labels

Address @gvwilson comments:

- add an example
- variables in the shell are UPPER_CASED
- Check that repository exists using a HEAD
Avoid JSON outup from setup-labels

As requested by @gvwilson, don't print the JSON response from
GitHub.

Others changes:

- Use arrays to store the label and its color
- Print message if fail