Don't be so quick to throw the manpage in my face

This has bugged me for a long time...
Add a period to error message
Small update to phrasing
DuckPAN: dead code elimination.

Remove a line which could never be hit.
Merge pull request #161 from duckduckgo/zaahir/calm-down-duckpan

Don't be so quick to throw the manpage in my face