[feature] --allow-sudo

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[test] fix uninstall specs
[feature] adds docs and test for '--verbose' flag

This commit was sponsored by pebble {code}
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[test] adds '--allow-sudo' test

This commit was sponsored by pebble {code}
http://pebblecode.com
Merge pull request #36 from hoodiehq/sudo

[feature] --allow-sudo support