Add RSS to README and Podcast Microsite Header (#18)

* add rss badge

Signed-off-by: James McLeod <james.mcleod@finos.org>

* add rss to microsite header

Signed-off-by: James McLeod <james.mcleod@finos.org>

* move rss badge

Signed-off-by: James McLeod <james.mcleod@finos.org>

Author: James McLeod

README.md

@@ -2,6 +2,8 @@
 
 <img src="docs/images/logo-400-400.png" width="230" height="230" />
 
+[![rss](https://github.com/aleen42/badges/blob/master/src/rss.svg?raw=true)](https://feeds.captivate.fm/untold-stories-of-open-source/)
+
 Open Source is embedded in every software application you touch today.
 
 It’s impossible to build a large scale application without it. The real question is, what’s the story behind that component, application, or framework you just downloaded? Not the specs. Not the functionality. The real story: “Who wrote the code? What is their backstory? What led them to the Open Source community?”
@@ -22,7 +24,7 @@ Listen to the latest episodes from The Linux Foundation ["The Untold Stories of
 
 ## Listen in your Browser
 
-Listen to Linux Foundation podcasts in your browser by visiting [The Untold Stories of Open Source](https://podcast.linuxfoundation.org/) microsite. It is also available on Spotify, Apple Podcasts, Amazon Podcast, and Google Podcast, and dozens of other podcast platforms. 
+Listen to Linux Foundation podcasts in your browser by visiting [The Untold Stories of Open Source](https://podcast.linuxfoundation.org/) microsite. It is also available on Spotify, Apple Podcasts, Amazon Podcast, and Google Podcast, and dozens of other podcast platforms.
 
 ## What the project does
 

website/docusaurus.config.js

@@ -40,11 +40,8 @@ module.exports = {
         {to: 'docs/podcasts-intro', label: 'Introduction', position: 'right'},
         {to: 'docs/podcasts/new-model-training', label: 'Podcasts', position: 'right'},
         {to: 'docs/templates/podcast-template', label: 'Add New Podcast', position: 'right'},
-        {
-          href: 'https://github.com/linuxfoundation/lf-podcast',
-          label: 'GitHub',
-          position: 'right',
-        }
+        {href: 'https://feeds.captivate.fm/untold-stories-of-open-source/', label: 'RSS', position: 'right'},        
+        {href: 'https://github.com/linuxfoundation/lf-podcast', label: 'GitHub', position: 'right'}
       ],
     },
     footer: {