## Usage
Add a `build.rs` file to your repo and list it in `Cargo.toml`
-````
+````toml
build = "build.rs"
````
List rustc_tools_util as regular AND build dependency.
-````
+````toml
[dependencies]
-rustc_tools_util = "0.1"
+rustc_tools_util = "0.2.1"
[build-dependencies]
-rustc_tools_util = "0.1"
+rustc_tools_util = "0.2.1"
````
In `build.rs`, generate the data in your `main()`