[close #147] Quiet API token

[schneems]

From this:

$ be rspec spec/unit
.... ›   Warning: token will expire 10/15/2021
 ›   Use heroku authorizations:create to generate a long-term token

..............

Finished in 20.48 seconds (files took 0.42776 seconds to load)
18 examples, 0 failures

To this:

$ be rspec spec/unit
..................

Finished in 20.48 seconds (files took 0.42776 seconds to load)
18 examples, 0 failures

[schneems]

There is still something wonky going on. Needs investigation:

$ be rspec spec/unit/
....
.
..............

Finished in 25.75 seconds (files took 0.45396 seconds to load)
19 examples, 0 failures