Mention Node.js wrapper on README

I recently created termbox2 (termbox1 already exists but is
unmaintained) wrapper library for Node.js JavaScript engine
and thought it would be nice to mention about it in README.md in case
anyone else than me needs one.

Author: RauliL

README.md

@@ -111,6 +111,7 @@ Other wrapper libraries:
 * [Termbox.pm (Perl)](https://github.com/sanko/Termbox.pm)
 * [termbox2-hs (Haskell)](https://github.com/gatlin/termbox2-hs)
 * [termbox2-zig (Zig)](https://sr.ht/~kolunmi/termbox2-zig)
+* [termbox2-node (JavaScript)](https://github.com/RauliL/termbox2-node)
 * [letloop's termbox2 (Chez Scheme)](https://github.com/letloop/letloop/)
 
 ### Examples