code: function help() {
    console.log("Usage:");
    console.log("  qrcode-svg [options] <content>");
    console.log("");
    console.log("Options:");
    console.log("  --help                 Print this message");
    console.log("  --padding [value]      Offset in number of modules");
    console.log("  --width [px]           Image width in pixels");
    console.log("  --height [px]          Image height in pixels");
    console.log("  --color [color]        Foreground color, hex or name");
    console.log("  --background [color]   Background color, hex or name");
    console.log("  --ecl [value]          Error correction level: L, M, H, Q");
    console.log("  -o [file]              Output file name");
    console.log("  -f                     Force overwrite");
    console.log("  -v                     Print version number");
    console.log("");
    console.log("Examples:");
    console.log("  qrcode-svg http://github.com");
    console.log("  qrcode-svg -f -o hello.svg \"Hello World\"");
    console.log("  qrcode-svg --padding 2 --width 120 --height 120 \"Little fox...\"");
    console.log("  qrcode-svg --color blue --background #ececec \"...jumps over\"");
  }
docs: Prints help message