Add link to Rust Github
Add link to Rust Github

Linking to the Rust-lang Github repository: https://github.com/rust-lang/rust
graydon/rust,aidancully/rust,aidancully/rust,graydon/rust,aidancully/rust,aidancully/rust,aidancully/rust,graydon/rust,graydon/rust,graydon/rust,graydon/rust,aidancully/rust