update README to install azk from de source
update README to install azk from de source

saitodisse/azk,marcusgadbem/azk,gullitmiranda/azk,juniorribeiro/azk,nuxlli/azk,Klaudit/azk,renanmpimentel/azk,fearenales/azk,azukiapp/azk,heitortsergent/azk,teodor-pripoae/azk,slobo/azk,fearenales/azk,slobo/azk,azukiapp/azk,renanmpimentel/azk,nuxlli/azk,marcusgadbem/azk,Klaudit/azk,heitortsergent/azk,agendor/azk,juniorribeiro/azk,saitodisse/azk-travis-test,saitodisse/azk,gullitmiranda/azk,saitodisse/azk-travis-test,agendor/azk,teodor-pripoae/azk