Update parameter to disable doc linting (#89)

In the upgrade to maven javadoc 3.0.0, the parameter to ignore doc linting
changed. This means that javadoc fails to build. This updates the parameter to
the correct one for disabling linting.

Author: johnwalker

pom.xml

@@ -114,7 +114,7 @@
                 <configuration>
                     <minmemory>128m</minmemory>
                     <maxmemory>1024m</maxmemory>
-                    <additionalparam>-Xdoclint:none</additionalparam>
+                    <doclint>none</doclint>
                 </configuration>
             </plugin>
         </plugins>