Cleanup

- remove preview generation
- fix vulnerabilities
- disable travis

Author: sebastianbenz

.travis.yml

@@ -17,7 +17,5 @@
 "use strict";
 
 module.exports = {};
-module.exports.generatePreview = require('./Preview.js').generateEmbeds;
-module.exports.generateSnippets = require('./Preview.js').generateSnippets;
 module.exports.parseSample = require('./Standalone.js');