Needs a README file, how to build, run demo, track outputs

I succeeded in compiling the code, thanks to your use of the ubiquitous cargo toolchain, via

cargo run

Then I tried following the Election Demonstration Video you cite, but it references nonexistant files like config/demo_poll.yaml which aren't here.

Then I discovered that most of the demo material I was looking for is already in the examples directory.

So the project could really use a bit more documentation, which should go in a README.md file, to at least just document how to build it, and then point to the scripts in the examples directory, and indicate how to generate some valid sample votes.