FEAT: added a short intro section to Red REPL in README file.
FEAT: added a short intro section to Red REPL in README file.

rheber/red,iArnold/red,red-eco/red,vehar/red,rheber/red,NikolayShubenkovProgSchool/red,vehar/red,iArnold/red,red-eco/red,NikolayShubenkovProgSchool/red