chore(docs): add logo marker

README.md

@@ -1,7 +1,10 @@
-<img src="/meta/phosphor-mark-tight-black.png" width="128" align="right" />
 
 # @phosphor-icons/core
 
+<!-- BEGIN_LOGO -->
+<img src="/meta/phosphor-mark-tight-black.png" width="128" align="right" />
+<!-- END_LOGO -->
+
 This repository hosts the raw SVGs and catalog data – including tags, categories, and release versions – of all icons in the [Phosphor Icons](https://phosphoricons.com) family. It serves as the basis for our fuzzy-search on our website and other tools, and as a dev dependency in the build process in some of our framework-specific libraries. You may find this package is useful to you in implementing a port of Phosphor to your preferred framework, or as a source of truth for our current SVG assets.
 
 [![NPM](https://img.shields.io/npm/v/@phosphor-icons/core.svg?style=flat-square)](https://www.npmjs.com/package/@phosphor-icons/core)