Add FrontAid CMS as a supporter

Author: troxler

media/frontaid.png

@@ -1,9 +1,16 @@
 # Awesome CSS Frameworks [![Awesome](https://awesome.re/badge.svg)](https://awesome.re)
 
-List of awesome CSS frameworks.
-
+List of awesome CSS frameworks.  
 Feel free to [contribute](https://github.com/troxler/awesome-css-frameworks/blob/master/.github/CONTRIBUTING.md).
 
+**Supported by [FrontAid CMS](https://frontaid.io/?pk_campaign=cssfw)**:
+
+<a href="https://frontaid.io/?pk_campaign=cssfw"><img
+  src="media/frontaid.png"
+  width="600"
+  height="123"
+  alt="FrontAid CMS - Agile Content Management with Git."></a>
+
 ## Contents
 - [Base / Reset / Normalize](#base--reset--normalize)
 - [Class-less](#class-less)