Add first thoughts on 'Coach' documentation

Initial ideas in relation to  creating and contrasting documentation
required for the ‘Coach’ product.
Fix typo on product page
Add missing period
Add 'A study of the professional' page

This essay discusses the definition of the professional, in relation to
design, and the importance of such a portrayal.
Fix type–title case
Fix typos
Testing Grunt
Clean up header
Merge pull request #2 from cfdesigner/Secondary

Secondary