Integrating Katie's predictiveFetching work about guess

[mgechev]

I can see two common modules which we can reuse/share in future:

• Google Analytics report parser. Currently, guess-ga and the one in the predictiveFetching branch are quite similar. The latter also processes page exists, which definitely makes sense.
• Reports persistence. Currently, the GuessPlugin just caches the reports in a temporal storage. I see Katie is using MongoDB. I think this is another place for collaboration.
• Models. Using Markov chain, there's not much to reuse because the model is quite simple already. When we design an appropriate NN, I'm pretty sure we'll be able to reuse it across the different projects. There are more unknowns here (where/how the model should be used, can we reuse the same model in the front-end & in the back-end, etc).

I'd love to figure out this week how best to position this work inside the repo. I'm currently thinking that we keep packages as-is for reusable modules that we deploy to npm (or we could roll Katie's work into a new package entry in there). I was otherwise viewing Katie's work as a workflow (which we'll hopefully eventually figure out the convergence points between compared to the rest of the packages we have).

To me \experiments\predictive-fetching-sites\ sounds pretty good. I also like workflows, however, I'm not sure if this will not trick people to think these are workflows for the webpack plugin. To me, a subdirectory called predictive-fetching-sites also sounds good.

[addyosmani]

I like the idea of eventually trying to explore better code reuse for GA report parsing and the models we're using. @khempenius when you're ready, would you like to PR your changes in to either of the above locations (experiments or root\predictive-fetching-sites and we can update the docs to reflect the update?

[khempenius]

PR is here: #27

I ended up adding the code in ./experiments/guess-static-sites

[addyosmani]

Closing now that we've landed this work. Thanks all!