Add basic User component.

src/components/User.js

@@ -0,0 +1,22 @@
+import React, { PropTypes } from "react";
+import { Link } from "react-router";
+import md5 from "md5";
+
+const User = ({ name }) => {
+    const path = `/app/users/${md5(name)}`;
+
+    return (
+        <Link to={path}
+            className="user"
+            activeClassName="user-selected"
+        >
+            {name}
+        </Link>
+    );
+};
+
+User.propTypes = {
+    name: PropTypes.string.isRequired
+};
+
+export default User;

src/components/UserList.js

@@ -1,6 +1,8 @@
 import React, { PropTypes } from "react";
 import ImmutablePropTypes from "react-immutable-proptypes";
 
+import User from "./User";
+
 class UserList extends React.Component {
     constructor(props) {
         super(props);
@@ -19,7 +21,7 @@ class UserList extends React.Component {
         for (const [ userName, userData ] of users.byName) {
             children.push(
                 <li key={userName}>
-                    {userName}
+                    <User name={userName} />
                 </li>
             );
         }