proper server store initialization

app/client/services/servers.js

@@ -1,20 +1,23 @@
 module.exports = function() {
 
+  // initialize servers store if doesn't exist
+  localStorage.servers = localStorage.servers || "[]";
+
   // function to save servers into localStorage
   function save() {
     localStorage.servers = JSON.stringify(servers);
   }
 
-
   // default servers
   var defaultServers = [
     {name: 'LattyCraft', ip: 'us.latty.info', port: 25565}
   ];
 
-
   // load servers from localstorage
   var servers = JSON.parse(localStorage.servers);
 
+
+  // if no servers are saved, load the default ones
   if (!servers || servers.length === 0) {
     servers = defaultServers;
     save();