chore(example): add another example and make navigation between them

src/email-second.js

@@ -0,0 +1,46 @@
+import React from 'react';
+import { readFileSync } from 'fs';
+
+import {
+  Mjml,
+  MjmlHead,
+  MjmlTitle,
+  MjmlPreview,
+  MjmlBody,
+  MjmlSection,
+  MjmlColumn,
+  MjmlButton,
+  MjmlImage,
+  MjmlStyle,
+  MjmlText
+} from 'mjml-react';
+
+export const generate = () => {
+  return (
+    <Mjml>
+      <MjmlHead>
+        <MjmlTitle>Last Minute Offer</MjmlTitle>
+        <MjmlPreview>Last Minute Offer...</MjmlPreview>
+      </MjmlHead>
+      <MjmlBody width={500}>
+        <MjmlSection fullWidth backgroundColor="#efefef">
+          <MjmlColumn>
+            <MjmlImage src="https://static.wixstatic.com/media/5cb24728abef45dabebe7edc1d97ddd2.jpg" />
+          </MjmlColumn>
+        </MjmlSection>
+        <MjmlSection>
+          <MjmlColumn>
+            <MjmlButton padding="20px" backgroundColor="#346DB7" href="https://www.wix.com/">
+              This Yet Another Template
+            </MjmlButton>
+          </MjmlColumn>
+        </MjmlSection>
+        <MjmlSection>
+          <MjmlColumn>
+            <MjmlText><a href="/">Go Back</a></MjmlText>
+          </MjmlColumn>
+        </MjmlSection>
+      </MjmlBody>
+    </Mjml>
+  );
+};

src/email.js

@@ -56,6 +56,11 @@ export const generate = () => {
             <MjmlText>I am red</MjmlText>
           </MjmlColumn>
         </MjmlSection>
+        <MjmlSection>
+          <MjmlColumn>
+            <MjmlText><a href="/2">Open Second Template</a></MjmlText>
+          </MjmlColumn>
+        </MjmlSection>
       </MjmlBody>
     </Mjml>
   );

src/server.js

@@ -1,13 +1,19 @@
 import express from 'express';
 import {render} from 'mjml-react';
 
-import {generate} from './email';
+import * as email1 from './email';
+import * as email2 from './email-second';
 
 const port = 3000;
 const app = express();
 
+app.get('/2', (req, res) => {
+  const {html} = render(email2.generate(), {validationLevel: 'soft'});
+  res.send(html);
+});
+
 app.get('*', (req, res) => {
-  const {html}  = render(generate(), {validationLevel: 'soft'});
+  const {html}  = render(email1.generate(), {validationLevel: 'soft'});
   res.send(html);
 });