* update node template from downsteam
template version = 4.0.0-dev
rust setup updated

* Update bin/node-template/runtime/Cargo.toml

Co-authored-by: Shawn Tabrizi <[email protected]>

* Review Rust setup README

* Apply suggestions from code review

Co-authored-by: Shawn Tabrizi <[email protected]>
Co-authored-by: Sacha Lansky <[email protected]>