Add copyright notice

client/Layout.js

@@ -61,6 +61,7 @@ class Layout extends React.Component {
     return (
       <div>
         <WindowSize onChange={this.adjustUnderline}/>
+        <div className="wrapper">
           <header>
             <h1>unpkg</h1>
             <nav>
@@ -83,7 +84,13 @@ class Layout extends React.Component {
               </Motion>
             </nav>
           </header>
+        </div>
         {this.props.children}
+        <div className="wrapper">
+          <footer>
+            <p>&copy; 2016-{(new Date).getFullYear()} Michael Jackson</p>
+          </footer>
+        </div>
       </div>
     )
   }

client/index.css

@@ -62,7 +62,7 @@ table th, table td {
   color: #999;
 }
 
-header, .wrapper {
+.wrapper {
   max-width: 600px;
   margin: 0 auto;
 }
@@ -125,3 +125,10 @@ header nav a:visited {
 .about-logo img {
   max-width: 60%;
 }
+
+footer {
+  margin-top: 40px;
+  border-top: 1px solid black;
+  font-size: 0.8em;
+  text-align: right;
+}