chore(markdown): Updated plugin docs

markdown/dev/reference/plugins/gore/en.md

@@ -0,0 +1,35 @@
+---
+title: "@freesewing/plugin-gore"
+---
+
+The **@freesewing/plugin-gore** plugin provides 
+[the gore macro](/reference/api/macros/gore).
+This macro allows you to generate [gore 
+segments](https://en.wikipedia.org/wiki/Gore_(segment)) — 
+2D panels to create a sphehrical shape as used in hats for example — 
+to your design.
+
+You'll be happy to hear that this plugin handles all the 
+mathematics for you to create a (part-)sphere in your patterns.
+
+## Installation
+
+```sh
+npm install @freesewing/plugin-gore
+```
+
+## Usage
+
+Like all [build-time plugins](/guides/plugins/types-of-plugins#build-time-plugins), you
+load them by passing them to the [freesewing.Design](/reference/api/design) super-constructor:
+
+```js
+import freesewing from "@freesewing/core";
+import gore from "@freesewing/plugin-gore";
+import config from "../config";
+
+const Pattern = new freesewing.Design(config, gore);
+```
+
+Now you can use the [gore](/reference/api/macros/gore) macro in your parts.
+