docs: give theme-toggle its Sign

.changeset/readme-sign-and-tagline.md

@@ -0,0 +1,5 @@
+---
+"@variablelab/theme-toggle": patch
+---
+
+Put the Sign and the Tagline at the top of the README, and set the author to `rcrd <ricardo@variable.land>`.

README.md

@@ -1,4 +1,10 @@
-# @variablelab/theme-toggle
+<p align="center">
+  <img src="https://raw.githubusercontent.com/withvariablelab/theme-toggle/HEAD/brand/sign-readme.svg" width="64" height="64" alt="">
+</p>
+
+<h1 align="center">theme-toggle</h1>
+
+<p align="center">The theme is set before first paint.</p>
 
 Light/dark/system color-mode toggle for React apps, with a tiny inline script that
 sets the theme **before first paint** to avoid the flash of the wrong theme (FOUC).

brand/README.md

@@ -0,0 +1,12 @@
+# theme-toggle brand
+
+The Sign of theme-toggle: an edge and a block, with a gap between them. It isn't a sun and a moon.
+
+| File | Use |
+| --- | --- |
+| `sign.svg` | The Sign, 24×24, in `currentColor`. Sites and images use this file. |
+| `sign-readme.svg` | The Sign on a `ground` square, for READMEs. |
+
+How a Sign is drawn and used: [vlab-brand › Project brand](https://github.com/withvariablelab/brand/blob/main/skills/vlab-brand/project-brand.md).
+
+These files aren't covered by this repository's license. Their use is set by [BRAND-USE.md](https://github.com/withvariablelab/brand/blob/main/BRAND-USE.md).

package.json

@@ -11,7 +11,7 @@
     "url": "git+https://github.com/withvariablelab/theme-toggle.git"
   },
   "license": "MIT",
-  "author": "rcrd <rcrd@variable.land>",
+  "author": "rcrd <ricardo@variable.land>",
   "type": "module",
   "exports": {
     ".": {