Accept anything with function 'submit' as a query

This allows for passing in custom objects which conform to the query API

Author: brianc

lib/client.js

@@ -284,7 +284,7 @@ Client.prototype.copyTo = function (text) {
 
 Client.prototype.query = function(config, values, callback) {
   //can take in strings, config object or query object
-  var query = (config instanceof Query) ? config :
+  var query = (typeof config.submit == 'function') ? config :
      new Query(config, values, callback);
   if(this.binary && !query.binary) {
     query.binary = true;