Adds support to SSL on Wildfly

To try this image follow the build instructions or just run:

`docker run -it -p 8080:8080 -p 8443:8443 abstractj/wildfly:jboss`

Or just run:

`docker build -t jboss/wildfly .`

The readme instructions were updated, also.
No entrypoint is needed, they would just override the command at launch, like this:

```
docker run jboss/wildfly /opt/wildfly/bin/launch.sh domain -b 0.0.0.0
```