Update README.md

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Pranav Srinivas Kumar 2019-04-09 15:04:03 -04:00 committed by GitHub
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@ -37,6 +37,7 @@ int main(int argc, char *argv[]) {
.action([](const std::string& value) { return std::stoi(value); });
program.parse_args(argc, argv);
auto input = program.get<int>("square");
std::cout << (input * input) << std::endl;