fix for number input, new integer input

lib/Options/IntegerOption.ts

@@ -0,0 +1,8 @@
+import { TypeValidation } from '../TypeValidation/TypeValidation';
+import { BaseOption } from './BaseOption';
+
+export class IntegerOption extends BaseOption<number> {
+  protected get validation ():TypeValidation {
+    return new TypeValidation ('int');
+  }
+}