Open Terminal
sudo apt-add-repository ppa:bitcoin/bitcoin
enter password if asked
press enter for yes
sudo apt-get update
sudo apt-get install qt4-default qt4-qmake libqt4-dev build-essential libboost-dev libboost-system-dev libboost-filesystem-dev libboost-program-options-dev libboost-thread-dev libdb4.8++-dev libssl-dev libminiupnpc-dev libminiupnpc8
press y and enter to confirm 34MB of download and 196MB of disk space (takes a while)
wget --output-document cagecoin-0.7.0-src.zip https://www.dropbox.com/s/764o8rz3llbi7eb/cagecoin-0.7.0-src.zip?dl=1
unzip cagecoin-0.7.0-src.zip
cd cagecoin-0.7.0-src/
nano cagecoin-qt.pro
add a # in front of BOOST_LIB_SUFFIX=-mt-s
press ctrl + x
y and enter to save
qmake
make (takes a while might get a few warnings this is normal)
./cagecoin-qt