Add sponsors section with DigitalOcean badge

Signed-off-by: Seth Horsley <isethi@me.com>

Author: sethhorsley

README.md

@@ -87,4 +87,8 @@ Licensed under the [MIT license](https://github.com/shadcn/ui/blob/main/LICENSE.
 
 ---
 
+## Sponsors
+[![DigitalOcean Referral Badge](https://web-platforms.sfo2.cdn.digitaloceanspaces.com/WWW/Badge%201.svg)](https://www.digitalocean.com/?refcode=0fdaefc76c39&utm_campaign=Referral_Invite&utm_medium=Referral_Program&utm_source=badge)
+
+
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