I'm trying to install a solidity compiler on my Mac. I've followed the guide here: https://github.com/ethereum/go-ethereum/wiki/Contract-Tutorial
The error that I've gotten when installing ccp-ethereum is "Error: No formulae found in taps."
zhongqin-imac:~ ngzhongqin$ brew install cpp-ethereum
Error: No available formula with the name "cpp-ethereum"
==> Searching for similarly named formulae...
Error: No similarly named formulae found.
==> Searching taps...
Error: No formulae found in taps.