Quick and Dirty Ghost install without -g (root)
realy quick guide, might not work :P
start with a root terminal
wget https://github.com/TryGhost/Ghost/releases/download/0.5.2/Ghost-0.5.2.zip
unzip Ghost-0.5.2.zip && cd ghost-0.5.2
npm install && npm install pm2
node_modules/pm2/bin/pm2 start index.js --name Ghost
node_modules/pm2/bin/pm2 list
(to show if ghost is running)