update: readme

README.md

@@ -232,17 +232,9 @@ Use this code under AGPL. No warranties are provided. Keep the laws of your loca
 
 ## My Other Zotero Addons
 
-- [zotero-better-notes](https://github.com/windingwind/zotero-better-notes): Everything about note management. All in Zotero.
-- [zotero-pdf-preview](https://github.com/windingwind/zotero-tag): PDF preview for Zotero
-- [zotero-tag](https://github.com/windingwind/zotero-tag): Automatically tag items/Batch tagging
-
-## Sponsor Me
-
-I'm windingwind, an active [Zotero](https://www.zotero.org) plugin developer. Devoting to making reading papers easier.
-
-Sponsor me to buy a cup of coffee. I spend more than 24 hours every week coding, debugging, and replying to issues in my plugin repositories. The plugins are open-source and totally free.
-
-If you sponsor more than $10 a month, you can list your name/logo here and have priority for feature requests/bug fixes!
+- [Better Notes](https://github.com/windingwind/zotero-better-notes): Everything about note management. All in Zotero.
+- [Preview](https://github.com/windingwind/zotero-tag): PDF preview for Zotero
+- [Actions & Tags](https://github.com/windingwind/zotero-tag): Automatically tag items/Batch tagging
 
 ## Sponsors
 
@@ -251,3 +243,9 @@ Thanks
 and other anonymous sponsors!
 
 If you want to leave your name here, please email me or leave a message with the donation.
+
+## Contributors
+
+<a href="https://github.com/windingwind/zotero-pdf-translate/graphs/contributors">
+  <img src="https://contrib.rocks/image?repo=windingwind/zotero-pdf-translate" />
+</a>