My Personal Package Archive (PPA)

 https://launchpad.net/~intuitivenipple/+archive

Add Key

sudo apt-key adv --recv-keys --keyserver keyserver.ubuntu.com 29047922

Add Repository

echo "deb http://ppa.launchpad.net/intuitivenipple/ppa/ubuntu $(lsb_release -sc) main" | sudo tee /etc/apt/sources.list.d/intuitivenipple.list
echo "deb-src http://ppa.launchpad.net/intuitivenipple/ppa/ubuntu $(lsb_release -sc) main" | sudo tee -a /etc/apt/sources.list.d/intuitivenipple.list
sudo apt-get update

Remove Repository

sudo rm /etc/apt/sources.list.d/intuitivenipple.list
sudo apt-get update