updated README per vnext branch plan
updated README per vnext branch plan

Signed-off-by: Victoria Bialas <99cd2b71a4b4f6883e7934ce9590288e2952433f@docker.com>

shin-/compose,schmunk42/compose,vdemeester/compose,vdemeester/compose,shin-/compose,thaJeztah/compose,swoopla/compose,sdurrheimer/compose,dbdd4us/compose,dnephin/compose,hoogenm/compose,schmunk42/compose,dnephin/compose,michael-k/docker-compose,sdurrheimer/compose,funkyfuture/docker-compose,swoopla/compose,thaJeztah/compose,funkyfuture/docker-compose,hoogenm/compose,GM-Alex/compose,dbdd4us/compose,jrabbit/compose,michael-k/docker-compose,jrabbit/compose,GM-Alex/compose