Function validateOptions

src/cli/common.js:290–298

(options)

    }

    function validateOptions(options) {
        for (var optionKey in options) {
            if (!globalOptions.hasOwnProperty(optionKey) && optionKey !== "files") {
                api.print(optionKey + " is not a valid option. Exiting...");
                outputHelp();
                api.quit(0);
            }
        }
    }

    function readConfigFile(config) {
        var csslintrc = config || ".csslintrc",