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 commit 'a13a1ea407aef965d258c52271d45f7b5c654257'

Conflicts:
	lib/gooddata/models/project.rb
	spec/unit/models/project_spec.rb
Merge branch 'master' of github.com:gooddata/gooddata-ruby
Merge branch 'master' of github.com:gooddata/gooddata-ruby into user-management
Merge branch 'master' of github.com:gooddata/gooddata-ruby
Merge branch 'master' of github.com:gooddata/gooddata-ruby into user-management
Added few models - AccountSettings, Invitation, User
Merge remote-tracking branch 'upstream/master'
Merge branch 'master' into user-management
Merge remote-tracking branch 'upstream/master' into user-management
Merge branch 'master' of github.com:gooddata/gooddata-ruby into user-management
Removed hardcoded stuff

Pagination support

Fixes #92

Support for pagination in Domain::users instance method, passing args to class method implementation

Proper merging passed optional options

Fix rubocop issues
Merge branch 'master' of github.com:gooddata/gooddata-ruby into user-management

Conflicts:
	lib/gooddata/models/project.rb
Disable problematic tests
Fixed integration test
Merge pull request #101 from fluke777/master

Reverting the change in contain? method
Merge branch 'master' of github.com:gooddata/gooddata-ruby into user-management

Conflicts:
	lib/gooddata/models/project.rb
Improved models, better wrapping, returning objects instead of plain json

Related to #69