Existing model specs refactored ("Better specs")
Proper newline character at EOF
register() and unregister() specs
More Model specs, reset() spec failing to fail :-)
Using new() rather than =[] to initialize set
reset() specification made to work
Include even empty attributes in as_json() output

The JSON parser frowns on nil attributes on input. Making rOCCI's output re-parsable.
Spec changes to complement as_json() change

Complementing commit d5f3e130a5b5c9e2d4801a8ff3f24dd6cc966fb2
Do not pass attributes explicitly on calling init

The right default will be used anyway and the original input has a wrong type (does not respond to :convert)
Raise exception if directory does not exist
Specs for #register_files()
Merge pull request #51 from sustr4/specupdate

Another batch of specs, focusing on Occi::Model