Workflow and common patterns documentation

  doc/common-patterns.mkd - New document showing common patterns to advise users.
  doc/dynamic-environments/workflow-guide.mkd - New document outlining initial workflow guide.

Directly addresses workflow questions in GH-120.
I changed the other filenames to monospace (I think I got bold from our internal wiki documentation that I based this on) but left this one alone. Was there a particular reason you liked this one bolded?