bundle update
TUTORIAL.md: clarify where the *.erb files go
TUTORIAL.md: factor out a section on ivars
TUTORIAL.md: oh, colours, you so pretty
TUTORIAL.md: @titleise all the templates
TUTORIAL.md: side-step the whole relative URLs issue
TUTORIAL.md: adjust coach notes
Merge pull request #5 from chastell/more_tutorial_fixes

More tutorial fixes