Update README.md

Author: Rich-Harris

README.md

@@ -112,6 +112,7 @@ Using `new Function(code)` is akin to using indirect eval.
 * [tosource](https://github.com/marcello3d/node-tosource) by Marcello Bastéa-Forte
 * [serialize-javascript](https://github.com/yahoo/serialize-javascript) by Eric Ferraiuolo
 * [jsesc](https://github.com/mathiasbynens/jsesc) by Mathias Bynens
+* [superjson](https://github.com/blitz-js/superjson) by Blitz
 
 
 ## License