chore(markdown): Updated plugin docs

markdown/dev/reference/plugins/versionfree-svg/en.md

@@ -0,0 +1,29 @@
+---
+title: "@freesewing/versionfree-svg"
+---
+
+The **@freesewing/plugin-versionfree-svg** plugin suppresses
+the inclusion of the FreeSewing version number in SVG output.
+This allows diffing pattern output between versions to check for
+any differences in the output between different versions of FreeSewing.
+
+## Installation
+
+```sh
+npm install @freesewing/plugin-bartack
+```
+
+## Usage
+
+Like all [run-time plugins](/guides/plugins/types-of-plugins#run-time-plugins), you
+load them by by passing them to the `use()` method of an instatiated pattern. 
+
+That method is chainable, so if you have multiple plugins you can just chain them together.
+
+```js
+import Aaron from "@freesewing/aaron";
+import versionfreeSvg from "@freesewing/plugin-versionfree-svg";
+
+const pattern = new Aaron().use(versionfreeSvg);
+```
+