fixing bug in json serialization and minor improvement in Schema generation

Author: priyanahata

pom.xml

@@ -6,7 +6,7 @@
 
     <groupId>uno.anahata</groupId>
     <artifactId>gemini-java-client</artifactId>
-    <version>1.0.5</version>
+    <version>1.0.6-SNAPSHOT</version>
     <packaging>jar</packaging>
 
     <name>gemini-java-client</name>