Tighten the Faraday requirement to avoid bugs with the 0.9 pre.
CLI agent:setup should uniq tokens

This is to make it such that provisioning tools like Ansible can
run the agent:setup command every time without endlessly adding
agent tokens.

Aight?
Bump to v0.6.1 so that we have a new bug-fix version.
Merge pull request #16 from Sutto/updates-for-sanity

v0.6.1 - Updates for Sanity