update public master

Author: arielgabizon

Diff for: README.md

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+# AZTEC 2.0 Monorepo
+
+The Aztec 2.0 system consists of the following sub projects.
+
+- `barretenberg` - C++ cryptographic library.
+- `barretenberg.js` - TypeScript wrapper around WASM build of barretenberg.
+- `blockchain` - Solidity smart contracts and TypeScript to interact with them.
+- `falafel` - Rollup server.
+- `sdk` - SDK for interacting with a rollup provider.
+
+
+Previous bugs fixed:
+https://medium.com/aztec-protocol/vulnerabilities-found-in-aztec-2-0-9b80c8bf416c.com:AztecProtocol/barretenberg.git