Reflect current Contributing practices (#424)

README.md

@@ -112,20 +112,16 @@ cargo update -p zstd-sys --precise 2.0.8+zstd.1.5.5
 
 ### Upgrading dependencies
 
-If your change requires a dependency to be upgraded you must do the following:
-
-1. Modify `Cargo.toml`
-2. Copy `Cargo-minimal.lock` to `Cargo.lock`
-3. Trigger cargo to update the required entries in the lock file - use `--precise` using the minimum version number that works
-4. Test your change
-5. Copy `Cargo.lock` to `Cargo-minimal.lock`
-6. Update `Cargo-recent.lock` if it is also behind
-7. Commit both lock files together with `Cargo.toml` and your code changes
+If your change requires a dependency to be upgraded you must please run `contrib/update-lock-files.sh` before submitting any changes.
 
 ## Code Formatting
 
 We use the nightly Rust formatter for this project. Please run `rustfmt` using the nightly toolchain before submitting any changes.
 
+## Linting
+
+We use `clippy` for linting. Please run `contrib/lint.sh` using the nightly toolchain before submitting any changes.
+
 ## License
 
 MIT