docs: add collaborators to readme (#28) (#29)

* docs: add collaborators to readme

* fix: heading

* Update README.md

Co-authored-by: Jay Paik <jaypaik@users.noreply.github.com>

README.md

@@ -1,4 +1,4 @@
-## Multisig Plugin
+# Multisig Plugin
 
 Multisig Plugin is an ERC6900-compatible k-of-n ownership plugin that supports both EOA and smart contract owners.
 
@@ -76,6 +76,10 @@ forge script script/Deploy.s.sol --rpc-url $RPC_URL --broadcast
 
 Our audit report from Quantstamp can be found in [audits](/audits).
 
+## Collaborators
+
+[<img src="https://assets-global.website-files.com/65d123ed4c76575a9e69648c/65db9e5db75bfd6e0a2a6065_maple-logo.png" alt="Maple Finance" height="32px">](https://maple.finance/)
+
 ## Acknowledgements
 
 The signature verification logic takes inspiration from the work done by [Gnosis Safe](https://github.com/safe-global/safe-smart-account).