Add a project and image (#3532)

* Upload African Union Flag
* Import AU Flag

Author: ZOPtTMX22zcBAl6i1HbGPbFwZzuelxkr8Zlq1t3

collections/made-in-africa/index.md

@@ -21,5 +21,6 @@ items:
  - bangajs/banga-cli
 display_name: Made in Africa
 created_by: mozzadrella
+image: made-in-africa.png
 ---
 Developers in Africa use open source technology to solve some of the world's most intractable problems and grow their business ecosystems. Here's a snapshot of local projects across the continent.