Replaced const with var per STRICT check

Author: Chris Park

lib/parameters.js

@@ -22,8 +22,7 @@ var URL = require("url");
 var http = require("http");
 var https = require("https");
 var zlib = require("zlib");
-
-const querystring = require('querystring');
+var querystring = require('querystring');
 
 /**
  * Compatible server version.

lib/rosetteRequest.js

@@ -21,7 +21,7 @@ var zlib = require("zlib");
 var rosetteConstants = require("./rosetteConstants");
 var RosetteException = require("./rosetteExceptions");
 
-const querystring = require('querystring');
+var querystring = require('querystring');
 
 /**
  * Compatible server version.