Add shippable.yml for new CI
Update shippable.yml for test coverage
Configure test plugins for shippable CI
Remove travis and coveralls configuration, add shippable badge
Configure output directory depending on environment variable
Remove useless maven test
Merge pull request #10 from AlexRNL/shippable

Travis to Shippable
Add attribute for collection item type
Make getValue method of AbstractParser public
Initial working version for parsing argument in collection
Display a proper error when the target collection is null.
Only allow user of the Arguments class to provide an AbstractParser to allow Collection fields to be filled by the Arguments class