* Update link in the README to the main JSON-Java repo

* Cleans up some warnings
* Adds new test for bug https://github.com/stleary/JSON-java/issues/332
* Adds some resource handling for string writers using pre-java1.7
support. I know StringWriters don't need a close method called, but the
tests should still handle their resources properly.

src/test/java/org/json/junit/MyPublicClass.java

@@ -3,6 +3,7 @@ package org.json.junit;
 /**
  * Need a class with some public data members for testing
  */
+@SuppressWarnings("boxing")
 public class MyPublicClass {
     public Integer publicInt = 42;
     public String publicString = "abc";