doc: Sample für die Verwendung der lib

lib/beanvalidator.dart

@@ -1,3 +1,42 @@
+/*
+ * Copyright (c) 2015, Michael Mitterer (office@mikemitterer.at),
+ * IT-Consulting and Development Limited.
+ * 
+ * All Rights Reserved.
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/// Validation-Check für PODOs
+///
+///     @beanreflector
+///     class UsernamePassword {
+///
+///         @EMail(message: const L10N( "{{value}} is not a valid eMail address"))
+///         String username;
+///
+///         @Password(message: const L10N( "{{value}} is not a valid password"))
+///         final String password;
+///
+///         UsernamePassword(this.username, this.password);
+///     }
+///
+///     main() {
+///         final UsernamePassword userpassword = new UsernamePassword("office@mikemitterer.at", "12345678aA#");
+///         final BeanValidator<UsernamePassword> beanValidator = new BeanValidator<UsernamePassword>();
+///         List<ViolationInfo> violationinfos = beanValidator.validate(userpassword);
+///     }
+///
 library beanvalidator;
 
 import 'dart:collection';