add xmpp wikipage

wiki/pages/xmpp.md

@@ -0,0 +1,27 @@
+---
+author: ~ben
+published: true
+title: xmpp
+description: how to use xmpp/jabber with your tilde.team account
+category: 
+    - main
+---
+
+# xmpp
+
+tilde.team now has a jabber server available for users.
+
+we're running ejabberd, a modern xmppd in erlang. authentication
+is configured to use your shell password, so just connect with any
+xmpp client with yourusername@tilde.team and your password.
+
+recommended clients are:
+
+- [conversations (android)](https://f-droid.org/en/packages/eu.siacs.conversations)
+- [gajim (linux/windows)](https://gajim.org)
+
+if you have a recommended client for mac platforms, feel free to discuss
+and add it to this list.
+
+we have a tilde.team MUC (multi user chat) at [team@conference.tilde.team](
+xmpp:team@conference.tilde.team?join), feel free to stop by!