Get rid of APP_ROOT in README
Get rid of APP_ROOT in README

openshift/sti-nodejs,ryanj/origin-s2i-nodejs,wyue-redhat/sti-nodejs,bachp/sti-conan,jhadvig/sti-nodejs,jhadvig/sti-nodejs,jasonmadigan/sti-nodejs,jasonmadigan/sti-nodejs,mfojtik/sti-nodejs,hhorak/sti-nodejs,stevekuznetsov/sti-nodejs,bachp/sti-conan,sdodson/sti-nodejs,ryanj/origin-s2i-nodejs,bucharest-gold/origin-s2i-nodejs,mbetsy/sti-nodejs,wyue-redhat/sti-nodejs,yapei/sti-nodejs,bucharest-gold/origin-s2i-nodejs,bachp/sti-conan,zeptosys/s2i-nodejs,openshift/sti-nodejs,yapei/sti-nodejs,mfojtik/sti-nodejs,mbetsy/sti-nodejs,stevekuznetsov/sti-nodejs,hhorak/sti-nodejs,zeptosys/s2i-nodejs,sdodson/sti-nodejs