Make package IPv6 ready

At the moment, the program does not recognise `::1` as a localhost address, this commit addresses this

lib/util/cmd.helper.js

@@ -53,7 +53,7 @@ exports.handle = program => {
 
   program.connectionLimit = 10;
 
-  if (program.host === 'localhost' || program.host === '127.0.0.1') {
+  if (program.host === 'localhost' || program.host === '127.0.0.1' || program.host === '::1') {
     program.dynamic = 1
   }
   //console.log(program.rawArgs);