To install Plack::Middleware::AppStoreReceipt, copy and paste the appropriate command in to your terminal.
        cpanm
        cpanm Plack::Middleware::AppStoreReceipt
        CPAN shell
        perl -MCPAN -e shell
install Plack::Middleware::AppStoreReceipt
        For more information on module installation, please visit the detailed CPAN module installation guide.