Update token format (sindresorhus#246)

Author: fregante

source/options.html

@@ -16,7 +16,7 @@ <h4>Root URL</h4>
 
 		<label>
 			<h4>Token</h4>
-			<input type="text" name="token" placeholder="a1b2c3d4e5f6g7h8i9j0a1b2c3d4e5f6g7h8i9j0" pattern="[a-z\d]{40}" spellcheck="false">
+			<input type="text" name="token" placeholder="ghp_a1b2c3d4e5f6g7h8i9j0a1b2c3d4e5f6g7h8" pattern="[\da-f]{40}|ghp_\w{36,251}" spellcheck="false">
 		</label>
 		<p class="small">For public repositories, <a href="https://github.com/settings/tokens/new?scopes=notifications&description=Notifier for GitHub extension" target="_blank">create a token</a> with the <strong>notifications</strong> permission and specify it.</p>
 		<p class="small">If you want notifications for private repositories, you'll need to <a href="https://github.com/settings/tokens/new?scopes=notifications,repo&description=Notifier for GitHub extension" target="_blank">create a token</a> with the <strong>notifications</strong> and <strong>repo</strong> permissions.</p>