include vignette?

[archenemies]

Hello,

I figured out how to run install_github in such a way as to compile the vignette, but it's taking a long time. Can we include a PDF vignette in the repo and link to it from README.md? It could even be included in a separate branch if you don't want it to pollute the revision history.

I was surprised not to be able to find a PDF vignette of this project on Google. It would be very useful. I'm trying to figure out how to make a 2-d scatter plot from a given subset of the word vectors, it looks like that is being done in the vignette but it would be useful to be able to see the example plot output first.

Thanks!