updating README

Author: snf

README.md

@@ -7,7 +7,7 @@
 [![Crates.io](https://img.shields.io/crates/v/multiplexer-evm.svg)](https://crates.io/crates/multiplexer-evm)
 [![Rust](https://github.com/BitFinding/multiplexer/actions/workflows/rust.yml/badge.svg)](https://github.com/BitFinding/multiplexer/actions/workflows/rust.yml)
 
-A flexible smart contract system for executing complex transaction sequences, featuring a Solidity executor contract and a Rust library for building execution flows.
+Originally developed as an internal MEV launchpad, Multiplexer is now open-sourced. It provides a flexible smart contract system for executing complex transaction sequences, featuring a Solidity executor contract and a Rust library for building execution flows.
 
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