Fix logging deprecation warning during sync.

lib/sequelize.js

@@ -364,7 +364,7 @@ module.exports = (function() {
       options = Utils._.extend({}, this.options.sync, options)
       options = Utils._.extend({}, this.options.sync, options)
     }
     }
 
 
-    options.logging = options.logging === undefined ? false : Boolean(options.logging)
+    options.logging = options.logging === undefined ? false : options.logging
 
 
     var chainer = new Utils.QueryChainer()
     var chainer = new Utils.QueryChainer()