Add fixture upload io
Add base spec for fixture upload io
Add stub code for package_spec
Add FactoryGirl Fixture spec
Merge branch 'dev/filefixtures' into dev/packagespec

    For file upload_io fixture
Add spec for Package.upload_io
Add spec for Package upload_io
Finish spec for Package.upload_file
Finish spec for Package.convert_to_fields
Refactor controller for package convert_to_fields