#2 re-develop route segmentation

[maxgrossman]

The old build code used a whole bunch of for loops to slice up bus routes.
Some combination of promises could probably make this quicker and less code.

The code should follow the following small pseudocode

• grab the routes and bus stops from the api
• Find where in that data structure includes 'iterables' and use that in a promise.map() so the same process I used to figure out how to slice buses can be done quickly.
• Take the thenable from that .map() and get it into a db, hopefully with the same promise-ability.

Questions I have and want write down to learn.

• concurrence v. parallelism (I know node is concurrent via the way the node app works. What does that mean for my attempt at essentially going beyond a for loop?)

[maxgrossman]

Answers to Questions:

[maxgrossman]

What I learned when coding here: