btc_line is both an executable binary that can be run, and a library that can be used in Rust programs.
Installing the command-line executable
Assuming you have Rust/Cargo installed, run this command in a terminal:
cargo install btc_line
It will make the btc_line command available in your PATH if you've allowed the PATH to be modified when installing Rust. cargo uninstall btc_line uninstalls.
Adding btc_line library as a dependency
Run this command in a terminal, in your project's directory:
cargo add btc_line
To add it manually, edit your project's Cargo.toml file and add to the [dependencies] section:
btc_line = "1.0.2"
The btc_line library will be automatically available globally.
Read the btc_line library documentation.