Add README

Signed-off-by: Eduardo L. Buratti <elb09@c3sl.ufpr.br>
Add GPLv3 COPYING

Signed-off-by: Eduardo L. Buratti <elb09@c3sl.ufpr.br>
Add .gitignore

Signed-off-by: Eduardo L. Buratti <elb09@c3sl.ufpr.br>