Install ZNC with checkinstall to make future removal/upgrades cleaner
Update installing-znc-fromsource-debian7.md

updated the instruction to match the command
Merge pull request #1 from afornuto/patch-2

Update installing-znc-fromsource-debian7.md
Merge pull request #13 from psandin/CheckinstallZNC

Install ZNC with checkinstall to make future removal/upgrades cleaner