Provide license

[alexey-milovidov]

Although reusing the queries and datasets are permitted to some extent by "fair use", it's better to provide public license for your repo.

Example:

To the extent possible under law, the author(s) have dedicated all copyright and related and neighboring rights to this software to the public domain worldwide. This software is distributed without any warranty.
You should have received a copy of the CC0 Public Domain Dedication along with this software. If not, see <http://creativecommons.org/publicdomain/zero/1.0/>.

[andrewcrotty]

Thanks, added MIT License.