More shapes

README.md

@@ -110,6 +110,12 @@ Animates the hamburger icon to the specified shape.
 - `'circle'` - Perfect circle shape
 - `'doughnut'` - Doughnut shape with center cutout
 - `'moon'` - Crescent moon shape
+- `'u'` - Inverted U shape (∩)
+- `'u_up'` - Upright U shape (U)
+- `'u_left'` - Left-facing U shape (⊂)
+- `'u_right'` - Right-facing U shape (⊃)
+- `'hamburger_vertical'` - Hamburger with middle line hidden (☰)
+- `'hamburger_horizontal'` - Horizontal hamburger with middle line hidden (⫘)
 
 **Example:**
 ```javascript
@@ -181,6 +187,12 @@ hamburger.destroy();
         <button onclick="changeShape('circle')">Circle</button>
         <button onclick="changeShape('doughnut')">Doughnut</button>
         <button onclick="changeShape('moon')">Moon</button>
+        <button onclick="changeShape('u')">∩</button>
+        <button onclick="changeShape('u_up')">U</button>
+        <button onclick="changeShape('u_left')">⊂</button>
+        <button onclick="changeShape('u_right')">⊃</button>
+        <button onclick="changeShape('hamburger_vertical')">☰</button>
+        <button onclick="changeShape('hamburger_horizontal')">⫘</button>
     </div>
 
     <script type="module">