The screen package isn't necessary but it's useful as a way to access the serial port.
sudo yum install arduino screen -y
Add the required groups to your user account.
sudo usermod -a -G uucp,dialout,lock $USER
You'll need to log out of your desktop environment and back in for the group settings to take effect.
sudo yum install arduino-core -y git clone git://github.com/amperka/ino.git cd ino sudo make install