add metal3 logos (cncf#182)

* add metal3 logos

* Update sandbox.md

* Update sandbox.md

* Update sandbox.md

* Update sandbox.md

README.md

@@ -71,6 +71,7 @@ You can find t-shirts, hoodies and stickers for Kubernetes at the CNCF [store](h
   * [Cloud Custodian](examples/sandbox.md#cloud-custodian-logos)
   * [Chaos Mesh](examples/sandbox.md#chaos-mesh-logos)
   * [k3s](examples/sandbox.md#k3s-logos)
+  * [metal3](examples/sandbox.md#metal3-logos)
 * [Other CNCF Logos](examples/other.md)
   * [CNCF](examples/other.md#cncf-logos)
   * [Certification](examples/other.md#certification-logos) (CKA, CKAD, KCSP, KTP)

examples/sandbox.md

@@ -1562,6 +1562,47 @@
     </tr>
     </table>
 
+
+#### metal3 Logos
+
+<table>
+    <tr>
+        <th colspan="5"></th>
+    </tr>
+    <tr>
+        <th></th>
+        <th colspan="2">PNG</th>
+        <th colspan="2">SVG</th>
+    </tr>
+    <tr>
+        <th></th>
+        <th>web</th>
+        <th>icon</th>
+        <th>web</th>
+        <th>icon</th>
+    </tr>
+    <tr>
+        <th>color</th>
+        <td><img src="/projects/metal3/web/color/metal3-color.png" width="125"></td>
+        <td><img src="/projects/metal3/icon/color/metal3-icon-color.png" width="125"></td>
+        <td><img src="/projects/metal3/web/color/metal3-color.svg" width="125"></td>
+        <td><img src="/projects/metal3/icon/color/metal3-icon-color.svg" width="125"></td>
+    </tr>
+    <tr>
+        <th>black</th>
+        <td><img src="/projects/metal3/web/black/metal3-black.png" width="125"></td>
+        <td><img src="/projects/metal3/icon/black/metal3-icon-black.png" width="125"></td>
+        <td><img src="/projects/metal3/web/black/metal3-black.svg" width="125"></td>
+        <td><img src="/projects/metal3/icon/black/metal3-icon-black.svg" width="125"></td>
+    </tr>
+    <tr>
+        <th>white</th>
+        <td><img src="/projects/metal3/web/white/metal3-white.png" width="125"></td>
+        <td><img src="/projects/metal3/icon/white/metal3-icon-white.png" width="125"></td>
+        <td><img src="/projects/metal3/web/white/metal3-white.svg" width="125"></td>
+        <td><img src="/projects/metal3/icon/white/metal3-icon-white.svg" width="125"></td>    </tr>
+    </table>
+
 Use of any trademark or logo is subject to the trademark policy available at https://www.linuxfoundation.org/trademark-usage
 
 Questions? Please email [[email protected]](mailto:[email protected]).