fix: fixed recordScreenshots option

Closes #30

Author: Chris Wren

lib/sauce_launcher.js

@@ -69,7 +69,7 @@ var SauceLauncher = function(args, sauceConnect, /* config.sauceLabs */ config,
       name: args.testName || config.testName || 'Karma test',
       'tunnel-identifier': tunnelIdentifier,
       'record-video': args.recordVideo || config.recordVideo || false,
-      'record-screenshots': args.recordScreenshots || config.recordScreenshots || true,
+      'record-screenshots': (args.recordScreenshots === false || config.recordScreenshots === false) ? false : true,
       'build': args.build || config.build || process.env.TRAVIS_BUILD_NUMBER ||
               process.env.BUILD_NUMBER || process.env.BUILD_TAG ||
               process.env.CIRCLE_BUILD_NUM || null,