Expand caveats

README.md

@@ -64,11 +64,13 @@ set of prepared templates:
 
 You can also modify these templates in the interactive mode to build your own custom template.
 
-## Comments
+## Caveats
 
 - The configuration applied by this tool is quite opinionated and might not fit all use-cases
   perfectly. `cargo-wizard` mostly serves to improve *discoverability* of possible Cargo profile and config options, to
   help you find the ideal settings for your use-cases.
+- `cargo-wizard` currently only modifies `Cargo.toml` and `config.toml`. There are other things that can be configured
+  to achieve e.g. even smaller binaries, but these are out of scope for this tool, at least at the moment.
 - `cargo-wizard` currently ignores Cargo settings that are not relevant to performance.
 - Cargo config (`config.toml`) changes are applied to the global `build.hostflags` setting, because per-profile
   RUSTFLAGS are still [unstable](https://github.com/rust-lang/cargo/issues/10271).