how to install gazebo on linux mint 17

edit

I found the answer, need only to apply the following change on the first step on this tutorial Step-by-step Install

sudo sh -c 'echo "deb http://packages.osrfoundation.org/gazebo/ubuntu lsb_release -cs main" > /etc/apt/sources.list.d/gazebo-latest.list'

by

sudo sh -c 'echo "deb http://packages.osrfoundation.org/gazebo/ubuntu trusty main" > /etc/apt/sources.list.d/gazebo-latest.list'