ros_nxt support and installation

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Hello everybody! I want to run my Lego NXT Robot with ROS, e.g. using RVIZ. Although using Kubuntu 14.04, I'm not fixed on this. I've followed the installation turtorial ( http://wiki.ros.org/Robots/NXT/electric ) even when it is expired. I changed

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

to trusty but sudo apt-get install ros-electric-nxtall says, that there are no files. Trying this with 12.04 it was the same. Are the sources shut down (or is it a problem with my installation)? Why is there no support anymore in the turtorial? I know this question has been asked many times, but I think this is a great topic. Even for kids to learn ROS.