updated README.me with new install instructions for Debian
updated README.me with new install instructions for Debian

JASONews/centinel,rpanah/centinel,lianke123321/centinel,lianke123321/centinel,Ashish1805/centinel,iclab/centinel,rpanah/centinel,rpanah/centinel,lianke123321/centinel,iclab/centinel,ben-jones/centinel,iclab/centinel