Enable javac lint.

- disabling serial ID related warning.

Change-Id: I5556c53367c2022baaf4b5fb7c3298cb4a8f9573
diff --git a/pom.xml b/pom.xml
index 2438940..629be48 100644
--- a/pom.xml
+++ b/pom.xml
@@ -94,6 +94,10 @@
           <encoding>UTF-8</encoding>
           <showDeprecation>true</showDeprecation>
           <showWarnings>true</showWarnings>
+          <compilerArgs>
+            <arg>-Xlint:all</arg>
+            <arg>-Xlint:-serial</arg>
+          </compilerArgs>
         </configuration>
         <executions>
         </executions>