Added PeerJs error handlers

build/node/Connectors/PeerJsConnector.js

@@ -9,6 +9,12 @@
       callback = arguments[1];
     } else {
       peer = new Peer(arguments[0], arguments[1]);
+      peer.on('error', function(err) {
+        throw new Error("Peerjs connector: " + err);
+      });
+      peer.on('disconnected', function() {
+        throw new Error("Peerjs connector disconnected from signalling server. Cannot accept new connections. Not fatal, but not so good either..");
+      });
       callback = arguments[2];
     }
     PeerJsConnector = (function() {