changed pretty_inspect to inspect

Changed `pretty_inspect` to `inspect` so that it'd run without issue on plain'ol Ruby. Of course, could also `require 'pp'` at the top of the file instead, if you'd prefer to keep it `pretty_inspect`.

Figured I should make you aware of the issue.

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That said, I _personally_ wouldn't expect this command to print anything. What it prints is super handy, but in the case where printed data would be displayed to the app's user, I definitely wouldn't want this to happen.

Just my 2¢, though.