Update 02 Properties

[brauliodiez]

Steps:

• Update Readme.md (and es) version
• Update code
• Check that code runs
• Go through readme ensure the sample can be build following readme steps.

Update A:

old version

import * as React from 'react';

- export const HelloComponent = () => {
+ export const HelloComponent = (props: {userName : string}) => {
  return (
-    <h2>Hello component !</h2> 
+    <h2>Hello user: { props.userName } !</h2>
  );
}

proposal

import * as React from 'react';

- export const HelloComponent = () => 
+ export const HelloComponent = (props: {userName : string}) => 
-    <h2>Hello component !</h2> 
+    <h2>Hello user: { props.userName } !</h2>

(same thing for the side note)