Merge pull request #1355 from sendgrid/mbernier-patch-4

adding video

Author: Matt Bernier

source/User_Guide/Marketing_Campaigns/Campaigns/index.html

@@ -10,6 +10,8 @@
   description:
 ---
 
+<iframe src="https://player.vimeo.com/video/139274837" width="500" height="281" frameborder="0" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>
+
 {% info %}
 Accounts are currently limited to 250 campaigns.
 {% endinfo %}