Judo Payments offers a platform to build complete mobile payment solutions and host applications with a Judo marketplace. The Judo Payments Ruby SDK assists in embedding Judo Payments functionalities into Ruby applications. The API and SDK methods, classes, and functionalities are fully documented on Judo's site. The SDK is compatible Ruby 1.9.3 or later (up to version 2.1.x) and requires a developer API key for use.
We recently wrote about a post from CodePen.io that suggested a way of keeping API keys private when publicly sharing code samples. This time, we've gone back to that idea, given a try, and dogfooded it. We used JSBin to not only show how it works, we've embedded the "bin" in our tutorial.