FYI: Legal use for this parser about dgc

[lmammino]

I have mentioned something very high level in my codemotion presentation slides (https://slides.com/lucianomammino/a-look-inside-the-european-covid-green-pass#/67/0/2).

@lu-zero, @Enrico204 (and everyone else), what's your opinion on adding a short section like this at the end of the README?

[lu-zero]

We are not lawyers and the license chosen clearly states:

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO
EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

If somebody wants to use our library in context that requires legal advice probably we could point to lawyers with such expertise.

[Enrico204]

I was not suggesting to add legal statements. My suggestion was to add a simple but explicit note to help users to look for applicable laws. Something like "Note that laws in your country might regulate the use of software that decode DGC, please look for a legal advice".

The note inside the license is legally valid. However, users may don't know that there are some laws governing this specific aspect (DGC), and I think that it would be nice to help users avoid being prosecuted just because they go easy on this topic.

[Enrico204]

I think that it's perfect 👍