Updated README.MacOS to recommend installing extension via brew
Updated README.MacOS to recommend installing extension via brew

phpv8/v8js,preillyme/v8js,ABaldwinHunter/v8js-clone,preillyme/v8js,ABaldwinHunter/v8js-clone,stesie/v8js,preillyme/v8js,preillyme/v8js,stesie/v8js,ABaldwinHunter/v8js-clone,stesie/v8js,ABaldwinHunter/v8js-clone,phpv8/v8js,phpv8/v8js,stesie/v8js