[DOC] Added Github syntax color flavour to README
[DOC] Added Github syntax color flavour to README

fcheung/tire,rubydubee/retire,HenleyChiu/tire,fabn/retire,zaharpecherin/retire,iamrahulroy/retire,elbuo8/retire,alphagov/tire,dbose/retire,ChapterMedia/tire,tklee/tire_shiphawk,Telmate/tire,fairfaxmedia/tire,karmi/retire,doximity/tire,brijeshgpt7/retire,mikepb/tire,1776/tire,mavenlink/retire