Updated the command for adding on redistogo.

I haven't tested the other redis add-on commands, but they probably also have changed.
Merge branch 'dev'
Update dependencies and address a few deprecations.
Merge branch 'master' of github.com:SnootyMonkey/coming-soon

Conflicts:
	project.clj
Update dependencies.
Update dependencies.
Update dependencies. Note crossovers deprecation.