[build] update the publish task and bump to 2.9.4

Author: mohsen1

scripts/copy-dist-package-json.js

@@ -1,12 +1,10 @@
 'use strict';
 
 var fs = require('fs');
-var path = require('path');
 
-var distPackage = require('./scripts/npm.json');
-var sourcePackage = require('./package.json');
+var distPackage = require('./npm.json');
+var sourcePackage = require('../package.json');
 
 distPackage.version = sourcePackage.version;
 
-fs.writeFileSync(path.join('.', 'dist', 'package.json'),
-  JSON.stringify(distPackage), null, 4);
+fs.writeFileSync('./dist/package.json', JSON.stringify(distPackage), null, 4);