Purpose ======= Given a QR code representing a TOTP auth key: 1. Decode the QR code and print the full contents. 2. Print the TOTP response for the current time. Building ======== You will need Rust: https://www.rust-lang.org/ For a development build: use `cargo build`; the executable will be located at `target/debug/de2fa`. For a production build, use `cargo build --release`. The executable will be located at `target/release/de2fa`. For usage, invoke the executable with `--help`.