Initial checkin.

my-element.ts

@@ -0,0 +1,24 @@
+import { LitElement, html, customElement, property } from 'lit-element';
+
+@customElement('my-element')
+class MyElement extends LitElement {
+
+  @property({type: String})
+  name = 'World';
+
+  constructor() {
+    super();
+  }
+
+  render(){
+    return html`
+      <p>Hello, ${this.name}!</p>
+    `;
+  }
+}
+
+declare global {
+  interface HTMLElementTagNameMap {
+    'my-element': MyElement;
+  }
+}