README: mention clippy-driver on usage list

ojeda · ojeda · commit a006d4d2d3e6 · 2021-12-14T18:13:15.000+01:00
Signed-off-by: Miguel Ojeda &lt;ojeda@kernel.org&gt;
diff --git a/README.md b/README.md
@@ -37,8 +37,8 @@ Table of contents:
 
 ## Usage
 
-Below are instructions on how to use Clippy as a subcommand, compiled from source
-or in Travis CI.
+Below are instructions on how to use Clippy as a cargo subcommand,
+in projects that do not use cargo, compiled from source or in Travis CI.
 
 ### As a cargo subcommand (`cargo clippy`)
 
