CC-by-SA license + credits

[wstlabs]

Right now, everything about the app (source code + data) is implicity (in our own heads) under the Creative Commons. We really need a proper, visible license (so the absence of one qualifies as a bug).

We just need to put formal license documents in appropriate locations (repos, + on the app itself). At the same time we should be crediting people (like taxbills.nyc) more visibly if they want to be credited.

[wstlabs]

As to crediting taxbills.nyc, the maintainer says "RE attribution, feel free to mention my name. A link to the GitHub is a must and the blog post about stabilization would be nice, if you think it's not confusing."

Which should be eminently do-able, of course.