Currently, this only works under linux.

I used rustup to install nightly-2016-07-04

To build:

git clone https://github.com/fxbox/quirc-rs.git
cd quirc-rs
git submodule update --init
cargo run --example rscam_win

I used an Android app called QR Code Generator by AVLStuff.com which allows a variety of QR codes to be generated. You can show the QR Code on the phone to the camera or download it and print it out and hold up a printed piece of paper.