Demoted IRC, promoted Slack

index.html

@@ -38,10 +38,16 @@ <h3>Who are the Omaha Perl Mongers?</h3>
 </p>
 
 <p>
-Chat with us in IRC! 
-   <a href="http://webchat.freenode.net/?channels=omaha.dev">#omaha.dev</a>
+Join #perl in <a href="http://slack.com">Slack</a>! Ping
+  <a href="http://twitter.com/skidvis" target="_blank">@skidvis</a>,
+  <a href="http://twitter.com/zachleat" target="_blank">@zachleat</a>, or
+  <a href="http://twitter.com/bill_riley" target="_blank">@bill_riley</a>
+  for an invite to "Midwest Dev Chat"
+</p>
+
+<p>
+Around the world IRC remains very popular: 
    <a href="http://widget.mibbit.com/?settings=a113650009300eee3f63869556cd53e3&server=irc.perl.org&channel=%23perl-help">#perl-help</a>
-   <a href="http://widget.mibbit.com/?settings=a113650009300eee3f63869556cd53e3&server=irc.perl.org&channel=%23mongers">#mongers</a>
 </p>