Fixes problem with missing firstname and lastname ..

Related to #69
Merge branch 'master' of github.com:gooddata/gooddata-ruby into user-management
More docs and tests
Merge pull request #80 from korczis/master

Fixed tests and rubocop issues
Merge commit 'a13a1ea407aef965d258c52271d45f7b5c654257'

Conflicts:
	lib/gooddata/models/project.rb
	spec/unit/models/project_spec.rb
Merge branch 'master' of github.com:gooddata/gooddata-ruby