added default params to deployemnt

gulpfile.js

@@ -42,7 +42,8 @@ gulp.task('compile-results', function(){
 
 var encryptFile = function(message){
     var keyLengthInBytes = 128;
-    var stringKey = process.env.KEY || 'qwerty';
+    var salt = process.env.SALT || '';
+    var stringKey = salt + (process.env.KEY || 'qwerty');
     var key = spritz.hash(stringKey, keyLengthInBytes);
     var byteArrMessage = spritz.stringToUtf8ByteArray(message);
     var cypher = spritz.encrypt(key, byteArrMessage);