dont run

[johnfelipe]

felipe@felipeurrego:~$ git clone https://github.com/mxiamxia/speech-recognition-tts.git
Cloning into 'speech-recognition-tts'...
remote: Counting objects: 529, done.
remote: Total 529 (delta 0), reused 0 (delta 0), pack-reused 529
Receiving objects: 100% (529/529), 687.29 KiB | 367.00 KiB/s, done.
Resolving deltas: 100% (87/87), done.
Checking connectivity... done.
felipe@felipeurrego:~$ cd speech-recognition-tts/
felipe@felipeurrego:~/speech-recognition-tts$ npm install
felipe@felipeurrego:~/speech-recognition-tts$ node app.js
felipe@felipeurrego:~/speech-recognition-tts$ sudo npm install
[sudo] password for felipe:
felipe@felipeurrego:~/speech-recognition-tts$ ls
app.js  node_modules  private.key  README.md  views
bin     package.json  public       routes
felipe@felipeurrego:~/speech-recognition-tts$ node app.js

How can i test it?