Add subversion keywords.

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1512672 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/src/main/java/org/apache/maven/plugin/gpg/AbstractGpgSigner.java b/src/main/java/org/apache/maven/plugin/gpg/AbstractGpgSigner.java
index 8184cea..91b682e 100644
--- a/src/main/java/org/apache/maven/plugin/gpg/AbstractGpgSigner.java
+++ b/src/main/java/org/apache/maven/plugin/gpg/AbstractGpgSigner.java
@@ -31,7 +31,7 @@
  * A base class for all classes that implements signing of files.
  *
  * @author Dennis Lundberg
- * @version $Revision: 1.1 $ $Date: 2004/07/28 09:48:35 2013-08-10 14:10 $
+ * @version $Revision$ $Date$
  * @since 1.5
  */
 public abstract class AbstractGpgSigner