Add Twitter Cards to each page (#133)

Artem Khvastunov

07.26.2019 3d4335a7879180b12ea34dfc9fba0d76fd5700ae

 exampleSite/content/posts/theme-demo.md

@@ -1,6 +1,8 @@
+++
date = "2017-01-08"
title = "Theme Demo"
description = "The post demonstrates features of the coder theme."
images = ["/images/N90.jpg"]
math = "true"

+++