Fix LICENSE on GitHub

[dschuermann]

GitHub displays "BSD-3-Clause" as K-9 Mail's license in the header above the file listing. This is because the repo contains the file "HTMLCLEANER_LICENSE". Adding a "LICENSE" file with Apache v2 should solve this issue.

[philipwhiuk]

Do we need NOTICE and LICENSE?

EDIT: Answering my own question

Per http://www.apache.org/dev/apply-license.html#license-file-name and http://www.apache.org/dev/licensing-howto.html#mod-notice

we need both, but what we have in NOTICE should be in LICENSE and we need a short NOTICE file which references the licenses we are using (like the HTMLCLEANER_LICENSE )

[dschuermann]

@philipwhiuk Like this?

[philipwhiuk]

I think this should be 2005 per line 2 of the old NOTICE.

[dschuermann]

I took the years from the About screen, but you are right old NOTICE says 2005. Will change it.

[philipwhiuk]

Looks a lot better. Thanks for looking into this @dschuermann . Probably need @cketti to review this as project lead but it's almost there I think.

[cketti]

I don't think we need to include the HtmlCleaner license in the NOTICE file. The repository doesn't contain any HtmlCleaner code. And we do have attribution for the Open Source libraries the app depends on in the About dialog of the app.

[dschuermann]

done

[cketti]

Thanks