Update README.md

Add NLnet incantation

README.md

@@ -104,3 +104,8 @@ Licensed under either of [Apache License, Version 2.0](LICENSE-APACHE) or
 otherwise, any contribution intentionally submitted for inclusion in this crate
 by you, as defined in the Apache-2.0 license, shall be dual licensed as above,
 without any additional terms or conditions.
+
+---
+
+This project was funded through the [NGI0 Core](https://nlnet.nl/core) Fund, a fund established by [NLnet](https://nlnet.nl/) with financial support from the European Commission's [Next Generation Internet](https://ngi.eu/) programme, under the aegis of [DG Communications Networks, Content and Technology](https://commission.europa.eu/about-european-commission/departments-and-executive-agencies/communications-networks-content-and-technology_en) under grant agreement No [101092990](https://cordis.europa.eu/project/id/101092990).
+