Allows db.query({ sql: "..." }, [ val1, ... ], cb); (#390)

When sql was an object, the second argument was assumed as being
callback instead of checking if it could be the values.

Author: dresende

lib/Connection.js

@@ -29,7 +29,11 @@ Connection.createQuery = function(sql, values, cb) {
   if (typeof sql === 'object') {
     // query(options, cb)
     options = sql;
-    cb      = values;
+    if (typeof values === 'function') {
+      cb = values;
+    } else {
+      options.values = values;
+    }
   } else if (typeof values === 'function') {
     // query(sql, cb)
     cb             = values;