added complete tests

tests/SampleResourceBundle_en_US.java

@@ -0,0 +1,29 @@
+/*
+ * File:         SampleResourceBundle_en_US.java
+ * Author:       JSON.org
+ */
+package org.json.tests;
+
+import java.util.*;
+
+/**
+ * The Class SampleResourceBundle_en_US.
+ */
+public class SampleResourceBundle_en_US extends ListResourceBundle {
+    
+    /* (non-Javadoc)
+     * @see java.util.ListResourceBundle#getContents()
+     */
+    @Override
+    public Object[][] getContents() {
+        return contents;
+    }
+    
+    /** The contents. */
+    private Object[][] contents = {
+        { "ASCII", "American Standard Code for Information Interchange" },
+        { "JAVA.desc", "Just Another Vague Acronym" },
+        { "JAVA.data", "Sweet language" },
+        { "JSON", "JavaScript Object Notation" },
+    };
+}