Add animation off on led strip

LED.html

@@ -35,7 +35,7 @@
         <div id="animationsContainer">
             <div class="animationsContainer">
                 <h2>Animations</h2>
-
+                <button id="A" onclick="buttonPushAnimation('A')">Off</button>
                 <button id="B" onclick="buttonPushAnimation('B')">Rainbow</button>
                 <button id="C" onclick="buttonPushAnimation('C')">Fill</button>
                 <button id="D" onclick="buttonPushAnimation('D')">Chasing</button>