Update Device Widths of Breakpoints Demo

[jryanconklin]

Issue

This ticket is to update the device widths for the breakpoints demo.

Analysis

When viewing the breakpoints demo for a particle install, the devices listed are of a certain vintage. See http:https://0.0.0.0:8080/app-pl/pl/?p=protons-breakpoints on a default Particle.

The device widths are captured as in _data as a yaml file:

particle/source/default/_data/device_widths.yml

A good path might be to find a way to automatically refresh this list with the most up-to-date devices. Or simply manually update this file to be more current.

Confirmation

As a developer, I am displayed the most up-to-date devices when viewing breakpoints.