Copied deltablue.py to deltablue.rb to start a Ruby port

Signed-off-by: Stefan Marr <git@stefan-marr.de>
Changed syntax to look like Ruby, somehow, not run, not tested...

Signed-off-by: Stefan Marr <git@stefan-marr.de>
Removed Python's colons, and unnecessary parentheses

Signed-off-by: Stefan Marr <git@stefan-marr.de>
Class constants need to be initialized, globals should be indicated with $, class members need to be accessed with ::

Signed-off-by: Stefan Marr <git@stefan-marr.de>
Need to use @ and ::

Signed-off-by: Stefan Marr <git@stefan-marr.de>
Don't need parentheses

Signed-off-by: Stefan Marr <git@stefan-marr.de>
It's not self., it is @

Signed-off-by: Stefan Marr <git@stefan-marr.de>
Those fields should be accessible

Signed-off-by: Stefan Marr <git@stefan-marr.de>