Add prototype of check
Fixes and suggestions
Changing sed command used to display help from Makefile.

As per https://github.com/swcarpentry/workshop-template/pull/53,
this PR is more selective about what it does and doesn't print.
Merge pull request #24 from gvwilson/fixing-display-of-commands

Changing sed command used to display help from Makefile.
Remove border bottom from title
Set up code color
Add docstrings

and others small fixes.
Merge pull request #26 from r-gaia-cs/remove-title-border-bottom

Remove border bottom from title
Merge pull request #28 from r-gaia-cs/code-color

Set up code color
A few more comments
Merge branch 'r-gaia-cs-check' into gh-pages
Merge pull request #33 from gvwilson/gh-pages

Building validator for lesson contents
Merge remote-tracking branch 'upstream/gh-pages' into gh-pages
Validation of links and changes to heading validation