Add link to RSS feed to posts index!

pages/posts_index.md

@@ -1,6 +1,6 @@
 ---
 layout: default
-permalink: /blog
+permalink: /blog/
 ---
 <script>var toggleExcerpt = function() {
     let es = document.getElementsByClassName('excerpt');
@@ -17,6 +17,8 @@ permalink: /blog
 # Blog posts
 Here, you can find my blog posts that I write in my spare time. <a href="javascript:toggleExcerpt()">Toggle excerpts</a>
 
+For you awesome people who use [RSS](https://en.wikipedia.org/wiki/RSS), the feed can be found [here](https://alphagame.dev/feed.xml)!
+
 <ul>
 {% for post in site.posts %}
     <li><a href="{{ post.url }}">{{ post.title }}</a></li>