static-layout: make blank components

src/component/Button.js

@@ -0,0 +1,12 @@
+import React from 'react';
+
+class Button extends React.Component {
+  render() {
+    return (
+      <div>
+        Welcome to Button
+      </div>
+    );
+  }
+}
+export default Button;

src/component/ButtonPanel.js

@@ -0,0 +1,12 @@
+import React from 'react';
+
+class ButtonPanel extends React.Component {
+  render() {
+    return (
+      <div>
+        Welcome to ButtonPanel
+      </div>
+    );
+  }
+}
+export default ButtonPanel;

src/component/Display.js

@@ -0,0 +1,12 @@
+import React from 'react';
+
+class Display extends React.Component {
+  render() {
+    return (
+      <div>
+        Welcome to Display
+      </div>
+    );
+  }
+}
+export default Display;