Update README.md (#2)

Update README.md (#2)

diff --git a/README.md b/README.md
index adb4eb6..220b33f 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,3 @@
 # discourse-prioritize-generic-onebox
 
-Discourse Plugin for prioritizing generic onebox over Twitter card.
+A Discourse plugin for prioritizing generic onebox over Twitter card embed.

GitHub sha: 2da057365769092bcbdfdc965be21ebf3ec63903

This commit appears in #2 which was merged by techAPJ.