Tutorial is out of date online

[kud1ing]

This change from November 2011

graydon@6168f8f#doc/tutorial/test.md

is not yet online:

http://www.rust-lang.org/doc/tutorial/test.html

Can we just point to the GitHub Markdown files?

[brson]

Graydon has been working on a way to automate this. Linking directly to github would lose the syntax highlighting that is added through some custom post-processing.

[brson]

This is automated now.