Add sponsor to readme

readme.md

@@ -2,6 +2,38 @@
 
 > Create a good-looking [DMG](https://en.wikipedia.org/wiki/Apple_Disk_Image) for your macOS app in seconds
 
+<br>
+
+---
+
+<div align="center">
+	<p>
+		<p>
+			<sup>
+				<a href="https://github.com/sponsors/sindresorhus">Sindre's open source work is supported by the community</a>
+			</sup>
+		</p>
+		<sup>Special thanks to:</sup>
+		<br>
+		<br>
+		<br>
+		<a href="https://dashcam.io?ref=sindresorhus_create_dmg">
+			<div>
+				<img src="https://sindresorhus.com/assets/thanks/dashcam-logo.png" width="280" alt="Dashcam">
+			</div>
+			<b>Video crash reports for Electron</b>
+			<div>
+				<sup>Capture the steps to reproduce every bug with the Dashcam desktop app.</sup>
+			</div>
+		</a>
+		<br>
+	</p>
+</div>
+
+---
+
+<br>
+
 Imagine you have finished a macOS app, exported it from Xcode, and now want to distribute it to users. The most common way of distributing an app outside the Mac App Store is by putting it in a `.dmg` file. These are hard to create, especially good-looking ones. You can either pay for a GUI app where you have to customize an existing design or you can run some homebrewed Bash script and you still have to design it. This tool does everything for you, so you can play with your 🐈 instead.
 
 <img src="screenshot-cli.gif">