Add liability clause (#1434)

* Add liability clause

* Update README.md

README.md

@@ -263,3 +263,21 @@ Liberapay: https://liberapay.com/iv-org/
 ## Contact
 
 Feel free to join our [Matrix room](https://matrix.to/#/#invidious:matrix.org), or #invidious on freenode. Both platforms are bridged together.
+
+## Liability
+
+We take no responsibility for the use of our tool, or external instances provided by third parties. We strongly recommend you abide by the valid official regulations in your country. Furthermore, we refuse liability for any inappropriate use of Invidious, such as illegal downloading. This tool is provided to you in the spirit of free, open software.
+
+You may view the LICENSE in which this software is provided to you [here](./LICENSE).
+
+>   16. Limitation of Liability.
+>
+> IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.