chore: update README.md with consumers (#15)

* chore: update README.md  with consumers

Author: mhdawson

README.md

@@ -1,2 +1,8 @@
 # wasm-builder
-Repository used to create docker images used to build wasm blobs used in Node.js
+Repository used to create docker images used to build wasm blobs used in Node.js.
+
+Currently used by
+
+[nodejs/undici](https://github.com/nodejs/undici)
+[nodejs/amaro](https://github.com/nodejs/amaro)
+[nodejs/cjs-module-lexer](https://github.com/nodejs/cjs-module-lexer)