Add NUMFOCUS Community and Affiliation

README.md

@@ -83,6 +83,9 @@
             <a href="https://bit.ly/open2c-slack">
                 <img src="https://img.shields.io/badge/chat-slack-%233F0F3F?logo=slack" alt="slack">
             </a>
+            <a href="https://www.numfocus.org/">
+                <img src="https://img.shields.io/badge/powered%20by-NumFOCUS-orange.svg?style=flat&colorA=E1523D&colorB=007D8A" alt="numfocus">
+            </a>
         </td>
     </tr>
 </table>
@@ -140,3 +143,8 @@ Interested in contributing to cooler? That's great! To get started, check out th
 - Process Hi-C data with [distiller](https://github.com/open2c/distiller)!
 - Downstream analysis with [cooltools](https://github.com/open2c/cooltools)!
 - Visualize your cooler data with [HiGlass](http://higlass.io)!
+
+
+### Affiliations
+
+Cooler is an Affiliated Project of [NumFOCUS](https://www.numfocus.org/).