Update README.md

Author: anorth

README.md

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-# w3dt
+# Web3 Dev Team
+
+This repo is the project management hub for PL's efforts contributing to the Web3 ecosystem through stewardship of libp2p, IPFS, IPLD, Filecoin and other projects.
+
+The primary planning mechanism is discussion of proposals for significant projects to be undertaken by PL-sponsored project teams. Check them out on the [projects board](https://github.com/protocol/web3-dev-team/projects/1).