duckduckgo/p5-app-duckpan — pull request #111 by moollaza (2014-08-27 15:11:40+00:00)
Title: change 'unless' to 'if' because check_requirements returns 0 for success

Not entirely sure if `check_requirements` should return a 0 for success (it seems `exit` indicates success with 0 though) - but reversing this check was easier than reversing the logic and all other checks in DuckPAN.

//cc @jagtalon @mwmiller