Add link to our IRC channel on freenode to the front page, above past events

* I'd like the IRC link to be prominent, but not disrupt the current design, so it goes below next event, above past events and other resources

Author: estebistec

pythonkc_site/templates/index.html

@@ -43,6 +43,13 @@ <h2>{{ next_event.name|safe }}</h2>
     </div>
   </section>
 
+  <section id="past-meetups">
+    <div class="wrap">
+      <h1>Join us on IRC!</h1>
+      <h3><a href="irc://chat.freenode.com:6667/pythonkc">#pythonkc on freenode</a></h3>
+    </div>
+  </section>
+
   <section id="past-meetups">
     <div class="wrap">
       <h1>Past Events</h1>