message: add release blurb to README
diff: @@ -26,7 +26,7 @@ api.md: components/scenegraph.markdown
  gallery.md: $(HEAD)
  .PHONY: readme
  -readme: components/title.markdown components/overview.markdown components/build.markdown
  +readme: components/title.markdown components/release.markdown components/overview.markdown components/build.markdown
  pandoc $(PANDOCFLAGS) -o ../README.md $^
  .PHONY: clean
  