Add a method to create a new world.
Use the setWorldPropertiesValue method
Add a method to delete a world.
Update the command line options to add the create/delete commands.
Announce when a server is being deleted.
Add a method to disable a world server
Add a method to enable a world
Fix the world not found logic of the delete and disable methods
Add a note about the disable/enable command line arguments
Start the world server with the enable command.
Merge branch 'master' into world-admin
Fix the delete and disable queryStatus calls
Create a default world if no worlds were found.
Add the create/delete and disable/enable commands to the README
Add more info to the create world option note
Merge pull request #8 from sandain/master

Merge master into world-admin
Merge pull request #9 from sandain/master

drop the checkOptionalArgument method, it was buggy.
Make the Usage statement easier to read.
Only create the default world if start is called and no world is found.
Merge master