Add information about coercions to readme
Add information about coercions to readme

solnic/virtus,macressler/virtus,hapiben/virtus,faucct/virtus,dslh/virtus,baojjeu/virtus,mallikarjunayaddala/virtus,XescuGC/virtus,JustMikey/virtus,reevoo/virtus,artemeff/virtus