Made minor fixes to tutorial docs per D. Harding's story "Some fixes to the tutorials" (ID
56547930) in Pivotal Tracker. Fixed A, B, first part of C.
Merge pull request #1453 from pziegfeld/tutorial_fixes

Per D. Harding's story, "Some fixes to the tutorials," (Pivotal ID 56547930), fixed A, B, first part of C.