Update CONTRIBUTORS.md (#1528)

CONTRIBUTORS.md

@@ -347,6 +347,10 @@ The following is a list of contributors to the .NET **nanoFramework** project (a
     <td><img src="https://github.com/MichaelWheeley.png?size=50&" height="50" width="50" ></td>
     <td><a href="https://github.com/MichaelWheeley">Michael R Wheeley</a></td>
   </tr>  
+  <tr>
+    <td><img src="https://github.com/mikmog.png?size=50" height="50" width="50" ></td>
+    <td><a href="https://github.com/mikmog">Mikael Mogren</a></td>
+  </tr>
   <tr>
     <td><img src="https://github.com/mikeoliphant.png?size=50&" height="50" width="50" ></td>
     <td><a href="https://github.com/mikeoliphant">Mike Oliphant</a></td>