update(os-final proj2-ubuntu): start to build source on ubuntu
update(os-final proj2-ubuntu): start to build source on ubuntu

refer to ubuntu wiki - build your own kernel

issue sabertazimi/hust-os-2017#3
issue sabertazimi/awesome-notes#27

sabertazimi/hust-lab,sabertazimi/hust-lab,sabertazimi/hust-lab,sabertazimi/hust-lab,sabertazimi/hust-lab,sabertazimi/hust-lab,sabertazimi/hust-lab,sabertazimi/hust-lab,sabertazimi/hust-lab,sabertazimi/hust-lab