Update README
Update README

  * Remove obsolete examples (closes #218)
  * Remove redundant LICENSE section

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