Add default delimiter to the prototype so it can be discovered reliab…

…ly via emitter.delimiter

lib/eventemitter2.js

@@ -10,11 +10,9 @@
   }
 
   function configure(conf) {
-
     if (conf) {
-      this.wildcard = conf.wildcard;
-      this.delimiter = conf.delimiter || '.';
-
+      conf.delimiter && (this.delimiter = conf.delimiter);
+      conf.wildcard && (this.wildcard = conf.wildcard);
       if (this.wildcard) {
         this.listenerTree = new Object;
       }
@@ -197,6 +195,8 @@
   // Obviously not all Emitters should be limited to 10. This function allows
   // that to be increased. Set to zero for unlimited.
 
+  EventEmitter.prototype.delimiter = '.';
+
   EventEmitter.prototype.setMaxListeners = function(n) {
     this._events || init.call(this);
     this._events.maxListeners = n;