Clarify license of generated report

[vladislav-eero]

Thank you for writing this software and providing it under the Apache License 2.0! Can you clarify if projects that include output from allure should consider those portions as being under the same license (and its license condition)? Some projects have statements clarifying this. For example, LLVM has an exception that clarifies that portions of the software that become part of your own software as a result of using LLVM don't need to comply with specific conditions of the license.

I don't think any revision to the license is needed. A note here in this issue, or a brief note added to the README, would be sufficient. Something like "Output of allure is not subject to the attribution requirement of the Apache License 2.0" or the contrary "Output of allure is subject to the Apache License 2.0 and its attribution requirement".