Add the installation and usage sections to the README.
Add the installation and usage sections to the README.

durcheinandr/t,emi80/t,kovetskiy/t,karabatov/ht,karabatov/ht,eduOS/t,sjl/t,sheriferson/t,eduOS/t,eduOS/t,durcheinandr/t,emi80/t,sjl/t,sheriferson/t,kovetskiy/t,emi80/t,durcheinandr/t,kovetskiy/t