Pass invites to the receive object

This commit passes a room invite to the receive node, so you can react to it.

Sample invitation:

HDsvcHGiTYFxxxxxxx:mydomain.de : msg : Object
object
type: "r.invite"
payload: "Invitation"
userId: "@relay:mydomain.de"
topic: "!HDsvcHGiTYFxxxxxxx:mydomain.de"
_msgid: "ef1fd7f3c8ae82e6"

src/matrix-server-config.js

@@ -239,6 +239,13 @@ module.exports = function(RED) {
                         });
                     } else {
                         node.log("Got invite to join room " + member.roomId);
+												let msg = {
+														type      : 'r.invite',
+														payload   : 'Invitation',
+														userId    : member.userId,
+														topic     : member.roomId
+												};
+												node.emit("Room.invite", msg);
                     }
                 }
             });