docs: Add CTL Compiled edtech blog to showcase

docs/content/showcase/ctlcompiled.md

@@ -0,0 +1,14 @@
+---
+date: 2016-07-25T13:45:09-04:00
+description: "CompilED is a collection of reflections and comments by the software developers at Columbia’s Center for Teaching and Learning (CTL). These views are rooted in our professional and personal experiences developing educational technology."
+license: "Creative Commons Attribution-ShareAlike 3.0 United States."
+licenseLink: "https://creativecommons.org/licenses/by-sa/3.0/us/"
+sitelink: https://compiled.ctl.columbia.edu/
+tags:
+- edtech
+- technology
+- blog
+thumbnail: /img/ctlcompiled-tn.png
+title: CompilED at CTL
+---
+