use octicons fork
use octicons fork

- see https://github.com/etpinard/octicons/commits/etpinard.xyz
- which only bundle the icons used in this repo
- this trims down bundle.js from 92.7kB down to 29kB

etpinard/etpinard.github.io,etpinard/etpinard.github.io,etpinard/etpinard.github.io