Initial testing of extractor and builder

Configured appropriately

src/static-parts/README-end.md

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+---
+
+_This repository is a work in progress. If you want to contribute, please check the open issues to see where and how you can help out!_
+
+_This README is built using [markdown-builder](https://github.com/30-seconds/markdown-builder)._

src/static-parts/README-start.md

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+![Logo](/logo.png)
+
+# 30 seconds of React
+
+> Curated collection of useful React snippets that you can understand in 30 seconds or less.
+
+- Use <kbd>Ctrl</kbd> + <kbd>F</kbd> or <kbd>command</kbd> + <kbd>F</kbd> to search for a snippet.
+- Contributions welcome, please read the [contribution guide](CONTRIBUTING.md).
+- Snippets are written in React 16.8+, using hooks.
+
+### Prerequisites
+
+To import a snippet into your project, you must import `React` and copy-paste the component's JavaScript code like this:
+
+```js
+import React from 'react';
+
+function MyComponent(props) {
+  /* ... */
+}
+```
+
+If there is any CSS related to your component, copy-paste it to a new file with the same name and the appropriate extension, then import it like this:
+
+```js
+import './MyComponent.css';
+```
+
+To render your component, make sure there is a node with and id of `"root"` present in your element (preferrably a `<div>`) and that you have imported `ReactDOM`, like this:
+
+```js
+import ReactDOM from 'react-dom';
+```
+
+#### Related projects
+
+- [30 Seconds of Code](https://30secondsofcode.org)
+- [30 Seconds of CSS](https://30-seconds.github.io/30-seconds-of-css/)
+- [30 Seconds of Interviews](https://30secondsofinterviews.org/)
+
+## Table of Contents