`git remote` fails unless you `cd` first.
Tell `git pull --rebase` what to rebase to.

It just fails if you're on an untracked feature branch.

(It works if you're on a tracked feature branch, but that's not the
scenario described here.)
Added links to BT production app and GitHub repo.

If we're going to feature the Bridge Troll project by name, we might as
well give readers a way to find it (in action and in source form).
Merge branch 'gh-pages-add-bridge-troll-links' of https://github.com/eostrom/bridge_troll into eostrom-gh-pages-add-bridge-troll-links

Conflicts:
	index.html