Update CONTRIBUTORS.md

- Add @oblaise.

CONTRIBUTORS.md

@@ -263,6 +263,10 @@ The following is a list of contributors to the .NET **nanoFramework** project (a
     <td><img src="https://github.com/flyingoverclouds.png?size=50" height="50" width="50"></td>
     <td><a href="https://github.com/flyingoverclouds">Nicolas Clerc</a></td>
   </tr>
+  <tr>
+    <td><img src="https://github.com/oblaise.png?size=50&" height="50" width="50" ></td>
+    <td><a href="https://github.com/oblaise">Olivier Blaise</a></td>
+  </tr>
   <tr>
     <td><img src="https://github.com/patrick-haldi.png?size=50" height="50" width="50"></td>
     <td><a href="https://github.com/patrick-haldi">Patrick Haldi</a></td>