Rewrite of Day 1 to use modern React (#294)

* update to hooks

* more class to function

* cleanup

* finish ts final

* update html lesson

* add lessons page

* clean up

* move getters into context

* adding type

* fix bug

* step 5 cleanup

* init final pass

* text tweak

* fix ternaries

* readme cleanup

* fixed root readme

step1-05/demo/src/App.tsx

@@ -1,11 +1,9 @@
 import React from 'react';
 
-export class TodoApp extends React.Component<any, any> {
-  render() {
-    return (
-      <div>
-        <p>Hello World</p>
-      </div>
-    );
-  }
+export const TodoApp = () => {
+  return (
+    <div>
+      <p>Hello World</p>
+    </div>
+  );
 }