Config to suppress "[WARNING] File encoding has not been set, using platform encoding UTF-8, i.e. build is platform dependent!"

Change-Id: I557de22966fb219aefc8469e53a7ef702f317252
diff --git a/pom.xml b/pom.xml
index 4cd0f8d..95ac15c 100644
--- a/pom.xml
+++ b/pom.xml
@@ -34,6 +34,10 @@
         </license>
     </licenses>
 
+    <properties>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    </properties>
+
     <dependencyManagement>
         <dependencies>
             <dependency>