- added package.html

git-svn-id: https://svn.apache.org/repos/asf/jakarta/commons/proper/cli/trunk@267481 13f79535-47bb-0310-9956-ffa450edef68

Author: John Keyes

src/java/org/apache/commons/cli2/validation/package.html

@@ -0,0 +1,12 @@
+Provides classes and interfaces for validating argument values.
+
+These classes are capable of validating argument values of the following type:
+
+<ul>
+  <li>file/directory</li>
+  <li>number</li>
+  <li>date/time</li>
+  <li>URL</li>
+  <li>enumeration</li>
+  <li>class</li>
+</ul>