Changed name for input model as parameter;

Added Joi to validate input parameters schema;
Removed old draft of Pass class;
Removed completely the old way to load the configuration

package.json

@@ -12,6 +12,7 @@
     "archiver": "^2.1.1",
     "async": "^2.6.0",
     "express": "^4.16.3",
+    "joi": "^13.4.0",
     "node-forge": "^0.7.5"
   }
 }