Closes #8 logging is implemented using SFL4J

Using SFL4J means that users can specify their own logging implementations and properties files by simply including a compatible jar in the class path such as log4j, logback, etc see www.slf4j.org for more information.
Closes #7 Port Inclusion and Exclusions

Allows users to specify included and excluded ports in the jleaser.config file which must be included on the class path.