feat(Header component): add new header component

src/app/components/Header/index.jsx

@@ -0,0 +1,17 @@
+import React, { Component } from 'react';
+import AppBar from "material-ui/AppBar";
+
+
+
+export default class Header extends Component{
+
+    constructor(props){
+        super(props);
+    }
+
+    render(){
+        return(
+                <AppBar title="To-Do App" showMenuIconButton={false} />
+          )
+    }
+}