Update README local run command to remove syspath

Since #3257 was reverted, including the sysroot in RUSTFLAGS gives the error `Option 'sysroot' given more than once`
rust-lang · Dec 29, 2018 · f4cf82c · f4cf82c
1 parent 3c4abb5
commit f4cf82c
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/README.md b/README.md
@@ -79,7 +79,7 @@ To have cargo compile your crate with Clippy without Clippy installation
 in your code, you can use:
 
 ```terminal
-RUSTFLAGS=--sysroot=`rustc --print sysroot` cargo run --bin cargo-clippy --manifest-path=path_to_clippys_Cargo.toml
+cargo run --bin cargo-clippy --manifest-path=path_to_clippys_Cargo.toml
 ```
 
 *[Note](https://github.com/rust-lang/rust-clippy/wiki#a-word-of-warning):*