Fixed issue with sync not taking effect

Made minor modification which allows the sync function to actually take
effect so that the rules queue can have rules disabled, enabled, and
repiroritized on the fly.

Author: Alec2435

lib/node-rules.js

@@ -49,6 +49,7 @@
     RuleEngine.prototype.execute = function(fact, callback) {
         //these new attributes have to be in both last session and current session to support
         // the compare function
+        var thisHolder = this;
         var complete = false;
         fact.result = true;
         var session = clonedeep(fact);
@@ -93,6 +94,7 @@
                     }
                 }
             };
+            _rules = thisHolder.activeRules;
             if (x < _rules.length && complete === false) {
                 var _rule = _rules[x].condition;
                 _rule.call(session, API, session);