Develop a list of upstream URLs for every family in google/fonts

[davelab6]

The key feature of the 0.1.0 release of the dashboard for me is to be able to say, this is the FB score of the fonts in X family in production, and this is the FB score of the fonts in the upstream.

To do that, we need to develop a complete list of upstream URLs for every family in google/fonts.

See fonttools/fontbakery#291 and fonttools/fontbakery#1262

[m4rc1e]

@davelab6 We currently have a Google doc for this. I've resent you a link to it.

[davelab6]

Thanks!

[davelab6]

http://chriszarate.github.io/sheetrock/ may be helpful for this

[davelab6]

Closing as duplicate of #15