Adding more comprehensive samples.

Proposing to add my Ruby script to the samples here, since the current sample lacks a lot of functionality (uploads and parsing, in particular). Please see commit messages for a somewhat more detailed description.

I chose to add this as a separate file because I believe that adding multiple additional calls to the current sample.rb would result in a script that's more difficult to read and less instructive - but I will convert mine to that format if you'd prefer.