You installed ruby #1, postgresql #2, git #3 on your computer
Type to command line
git clone git@github.com:RaptorialThing/rubanok.git or git clone https://github.com/RaptorialThing/rubanok.git
bin/setup
bin/dev
Open http://127.0.0.1:3000/ or rails s -p 3000 open http://127.0.0.1:3000/