No need to sign JARs using maven-jarsigner-plugin (#466)

diff --git a/org.jacoco.doc/docroot/doc/changes.html b/org.jacoco.doc/docroot/doc/changes.html
index 0ee9e67..d41ef99 100644
--- a/org.jacoco.doc/docroot/doc/changes.html
+++ b/org.jacoco.doc/docroot/doc/changes.html
@@ -48,6 +48,13 @@
       (GitHub <a href="https://github.com/jacoco/jacoco/issues/427">#427</a>).</li>
 </ul>
 
+<h3>Non-functional Changes</h3>
+<ul>
+  <li>Released JaCoCo JARs are not signed any more. Signed versions of JaCoCo are
+      now available from the Eclipse Orbit project
+      (GitHub <a href="https://github.com/jacoco/jacoco/issues/466">#466</a>).</li>
+</ul>
+
 <h2>Release 0.7.7 (2016/06/06)</h2>
 
 <h3>New Features</h3>