Add title to release notes

hadley · hadley · commit 66aeee5004a6 · 2016-11-01T15:10:14.000-05:00
diff --git a/vignettes/releases/ggplot2-2-2-0.Rmd b/vignettes/releases/ggplot2-2-2-0.Rmd
@@ -1,4 +1,5 @@
 ---
+title: ggplot2 2.2.0
 output:
   html_document:
     self_contained: false
