Parser API for base64 data

Signed-off-by: Fabio José <fabiojose@gmail.com>

lib/formats/base64.js

@@ -0,0 +1,15 @@
+
+function Parser(decorator) {
+  this.decorator = decorator;
+}
+
+Parser.prototype.parse = function(payload) {
+  let toparse = payload;
+  if(this.decorator){
+    toparse = this.decorator.parse(payload);
+  }
+
+  return Buffer.from(toparse, "base64").toString();
+};
+
+module.exports = Parser;