Note about non-working example
Updated doc to use tlsManagerSettings

As per Snoyberg's own answer on http://stackoverflow.com/questions/25829613/why-is-my-yesod-app-throwing-a-tlsnotsupported-exception-when-i-try-to-log-in.
I don't know why this was not corrected - perhaps there is a good reason :)
Merge branch 'just-asciidoc' of /home/ubuntu/sites/yesodweb.com/content/book/tools/../..
Merge commit 'be44c0bd98f8714dd952a770036c30614a6ed192'
New blog post: yesod-gitrepo