Fix broken cucumber steps.

- Ignore tmp dir from Aruba.
- Add missing quote.
- Change cookbooks dir to parent directory.
Test works and attributes are set in node.json.
Merge branch 'install_osirix' of https://github.com/Joradi98/chef-osirix into install_osirix

Conflicts:
	features/step_definitions/osirix_steps.rb
Merge branch 'install_osirix'
Install chefspec and add pending example.
Use public repo path for chefspec.
Refactor remote_file with specs.
Refactor unzip OsiriX with specs.
Refactor installing Osirix with specs.
Switch to new rspec syntax.
Remove unused node.json (replaced by default attributes)
Remove unused node.json (replaced by default attributes)
Merge branch 'default_attributes'
Install OsiriX with one command

You use a bootstrap-script to install OsiriX. A detailed description was added to the README.