Support hiding the featured image header text. (#155)

Sean Harger

11.47.2019 e418548683db5eb3eff98fc073789932f9a353b1

 exampleSite/content/contact.md

@@ -1,5 +1,7 @@
---
title: Contact
featured_image: "images/notebook.jpg"
omit_header_text: true
description: We'd love to hear from you
type: page
menu: