Add some clarity on the license/license-file warning.
Add some clarity on the license/license-file warning.

rust-lang/cargo,rust-lang/cargo,eminence/cargo,eminence/cargo,rust-lang/cargo,nipunn1313/cargo,eminence/cargo,rust-lang/cargo,rustyhorde/cargo,eminence/cargo,rustyhorde/cargo,nipunn1313/cargo,rustyhorde/cargo,rustyhorde/cargo,nipunn1313/cargo,nipunn1313/cargo