Fixed typo
Improved working with roles
#get_role -> uri, identifier, title, summary
Fix rubocop issues
More consistent
Fixed test
Update project.rb
Merge pull request #188 from korczis/master-upstream

Fixed typo
Merge branch 'master' of https://github.com/gooddata/gooddata-ruby into dash-v2

Conflicts:
	lib/gooddata/models/project.rb
	spec/unit/models/project_spec.rb