Trac 146 Example report API usage

Added example for creating a report
diff --git a/org.jacoco.doc/docroot/doc/api.html b/org.jacoco.doc/docroot/doc/api.html
index ddeaa0c..f3801f4 100644
--- a/org.jacoco.doc/docroot/doc/api.html
+++ b/org.jacoco.doc/docroot/doc/api.html
@@ -62,6 +62,11 @@
           agents over the remote protocol. 

       </td>

     </tr>

+    <tr>

+      <td><a class="el_source" href="examples/java/ReportGenerator.java">ReportGenerator.java</a></td>

+      <td>This example generates HTML reports based on a simple project layout and well known execution

+          data store file name.</td>

+    </tr>

   </tbody>

 </table>