docs: Add license strategy doc

Add a brief document explaining that the project uses SPDX license
identifiers.

Fixes #58.

Signed-off-by: James O. D. Hunt <james.o.hunt@intel.com>
This commit is contained in:
James O. D. Hunt 2018-04-18 10:38:44 +01:00
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# Licensing strategy
* [Project License](#project-license)
* [License file](#license-file)
* [License for individual files](#license-for-individual-files)
## Project License
The license for the [Kata Containers](https://github.com/kata-containers)
project is [Apache 2.0](https://www.apache.org/licenses/LICENSE-2.0).
## License file
All repositories in the project have a top level file called `LICENSE`. This
file lists full details of all licences used by the repository.
## License for individual files
Where possible all files in all repositories also contain a
[SPDX](https://spdx.org) license identifier. This provides fine-grained
licensing and allows automated tooling to check the license of individual
files.
This SPDX licence identifier requirement is enforced by the
[CI (Continuous Integration) system](https://github.com/kata-containers/tests/blob/master/.ci/static-checks.sh).