added prettier, removed seperate react eslint config, fixed missing

component display name Markdown.js, and added run method to app

src/index.js

@@ -1,13 +1,10 @@
 const logger = require('winston');
 const app = require('./app');
 const port = app.get('port');
-const server = app.listen(port);
 
-app.startNext(); 
-
-server.on('listening', () =>
+app.run(port).then(() => {
   logger.info('MYKB listening at http://%s:%d', app.get('host'), port)
-);
+})
 
 process.on('unhandledRejection', (reason, p) =>
   logger.error('Unhandled Rejection at: Promise ', p, reason)