Standard data file names in example workflows

[jonnew]

For names of files saved in workflows, follow the example of the workflow in the BreakoutBoard user guide.

[cjsha]

Timestamps are the best for filenames. But they become extremely annoying if there are bunch of files for a single session that get created at different times and therefore have different suffixes. This is going to be common with this library, so we should stay away from them.

It also indicates we need a more unified recording operator, but this is already on the TODO.

Originally posted by @jonnew in #135 (comment)

Part of resolving this issue is mentioning jon's comment in the style guide that ceci and I are maintaining in a branch.