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).
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