JSON serializer implementation

Change-Id: Ib67d4eff6ad2e75f0632e9a6e93f51373058daaf
diff --git a/pom.xml b/pom.xml
index 9483615..91c9de8 100644
--- a/pom.xml
+++ b/pom.xml
@@ -37,6 +37,7 @@
         <module>compiler</module>
         <module>model</module>
         <module>runtime</module>
+        <module>serializers</module>
     </modules>
 
     <!-- FIXME this can be removed if/when buck-api is released -->