Restores query separator period in JSONUtils.

Author: roundhill

WordPressUtils/src/main/java/org/wordpress/android/util/JSONUtil.java

@@ -10,7 +10,7 @@
 import java.util.ArrayList;
 
 public class JSONUtil {
-    private static String QUERY_SEPERATOR= "";
+    private static String QUERY_SEPERATOR=".";
     private static String QUERY_ARRAY_INDEX_START="[";
     private static String QUERY_ARRAY_INDEX_END="]";
     private static String QUERY_ARRAY_FIRST="first";