Update CONTRIBUTORS

- Add @CarlosSardo @zoekdestep @ikivanc

CONTRIBUTORS.md

@@ -43,6 +43,10 @@ The following is a list of contributors to the .NET **nanoFramework** project (a
     <td><img src="https://github.com/KiwiBryn.png?size=50&" height="50" width="50"></td>
     <td><a href="https://github.com/KiwiBryn">Bryn Lewis</a></td>
   </tr>
+  <tr>
+    <td><img src="https://github.com/CarlosSardo.png?size=50&" height="50" width="50" ></td>
+    <td><a href="https://github.com/CarlosSardo">Carlos Sardo</a></td>
+  </tr>
   <tr>
     <td><img src="https://github.com/NemesisXB.png?size=50&" height="50" width="50"></td>
     <td><a href="https://github.com/NemesisXB">Christiaan Alberts</a></td>
@@ -79,6 +83,10 @@ The following is a list of contributors to the .NET **nanoFramework** project (a
     <td><img src="https://github.com/denis-susan.png?size=50&" height="50" width="50"></td>
     <td><a href="https://github.com/denis-susan">Denis Susan</a></td>
   </tr>
+  <tr>
+    <td><img src="https://github.com/devbotas.png?size=50&" height="50" width="50" ></td>
+    <td><a href="https://github.com/devbotas">devbotas</a></td>
+  </tr>
   <tr>
     <td><img src="https://github.com/edleno2.png?size=50" height="50" width="50"></td>
     <td><a href="https://github.com/edleno2">Edward Lenoir</a></td>
@@ -103,6 +111,10 @@ The following is a list of contributors to the .NET **nanoFramework** project (a
     <td><img src="https://github.com/hbraasch.png?size=50" height="50" width="50"></td>
     <td><a href="https://github.com/hbraasch">Heinrich Braasch</a></td>
   </tr>
+  <tr>
+    <td><img src="https://github.com/ikivanc.png?size=50&" height="50" width="50" ></td>
+    <td><a href="https://github.com/ikivanc">Ibrahim KIVANC</a></td>
+  </tr>
   <tr>
     <td><img src="https://github.com/ishvedov.png?size=50" height="50" width="50"></td>
     <td><a href="https://github.com/ishvedov">Ivan Shvedov</a></td>
@@ -243,6 +255,10 @@ The following is a list of contributors to the .NET **nanoFramework** project (a
     <td><img src="https://github.com/steffalk.png?size=50" height="50" width="50"></td>
     <td><a href="https://github.com/steffalk">Stefan Falk</a></td>
   </tr>
+  <tr>
+    <td><img src="https://github.com/zoekdestep.png?size=50&" height="50" width="50" ></td>
+    <td><a href="https://github.com/zoekdestep">Stephanie Visser</a></td>
+  </tr>
   <tr>
     <td><img src="https://github.com/Roadrunner67.png?size=50" height="50" width="50"></td>
     <td><a href="https://github.com/Roadrunner67">Søren BC</a></td>