Create a docs folder and add a file for solutions
add bulk of style guide for lab solutions
Update solutions-guide.md

Fixed typo
Merge pull request #423 from lmock/patch-1

Update solutions-guide.md
Clean up some docs
Merge branch 'docs' of github.com:beautyjoy/bjc-r into docs

* 'docs' of github.com:beautyjoy/bjc-r:
  Update solutions-guide.md
formatting
add quizzes
permissions
quiz docs stub
Merge pull request #424 from beautyjoy/docs

Docs