Update README.md

Adds clarification about the build process for WASM bindings

nucypher-core-wasm/README.md

@@ -7,4 +7,8 @@ cargo test
 make clean 
 make 
 cd examples/node && rm -rf node_modules/nucypher-core node_modules/umbral-pre && yarn install --check-files && yarn test
-```
+```
+
+## Bundling and releasing
+
+Bundling methods in the `Makefile` have been replaced by [`nucypher-core-wasm-bundler`](../nucypher-core-wasm-bundler/README.md). Use this new build process for updating the NPM package, `@nucypher/nucypher-core`.