JsonUtil (jose4j 0.5.0 API)

```
public class JsonUtil
extends Object
```
This class should be the point of contact for JSON processing. The code in the internal.json_simple package was originally taken from the Apache 2.0 licensed json-simple source code (changing the package). I'm a little uneasy about it. But json-simple hasn't changed much in years and jose4j only needs fairly basic JSON processing. Doing this lets me remove one more dependency and avoid any potential dependency conflicts. It also will let me to make changes to the JSON processing like not escaping forward slashes. There’s some risk in this but moving to a new/different processor in the future isn’t really made particularly more difficult by this (as long as this class is the touch point for JSON processing).

Constructors
Constructor and Description
`JsonUtil()`

Methods
Modifier and Type	Method and Description
`static Map<String,Object>`	`parseJson(String jsonString)`
`static String`	`toJson(Map<String,?> map)`
`static void`	`writeJson(Map<String,?> map, Writer w)`

public static Map<String,Object> parseJson(String jsonString)
                                    throws JoseException

public static String toJson(Map<String,?> map)

public static void writeJson(Map<String,?> map,
             Writer w)
                      throws IOException

Class JsonUtil