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.
Right, but I was saying that you generate the cert at the build time and everyone in the world would use the exact same cert, which is not a good idea. Certs should be generated at runtime (if needed).