Just do this command :
git clone https://github.com/vikjovanov/juststupid.git ~/Applications/juststupid && cd ~/Applications/juststupid && ./install_ugly
git clone https://github.com/vikjovanov/juststupid.git ~/Applications/juststupid && cd ~/Applications/juststupid && ./install_feelo
git clone https://github.com/vikjovanov/juststupid.git ~/Applications/juststupid && cd ~/Applications/juststupid && ./install_mariam