We no longer rely on a build process to work on the theme files.
This is easier for contributors, and the added complexity isn't worth
the trouble for our use cases.
This removes the need to initialize a (broken) submodule URL
to get a local copy of the website running.
The plugin was cloned from https://github.com/pcvonz/oc-patreongoalstatus-plugin
(commit 5d685ddc9bbb522d668f7906185f24b1319da3b3).
- Increase the required Node.js version to 8.x.
- Recommend using fnm as it's much faster to initialize compared to
nvm.
- Fix warnings reported by markdownlint.
This simplifies setting up the dev environment to run the website
(possibly with a database dump) and test changes before deploying
to the live instance.
