Lot of npm-debugs files can be generated in devs computers, each one with a number suffix
ex:
```sh
npm-debug.log.213131231
npm-debug.log.213131231
npm-debug.log.213131231
```

Adding a wildcard prevents for accidental commits

_Official and default .gitignore for node in github.com: https://github.com/github/gitignore/blob/master/Node.gitignore#L4_

(also added .idea to .gitignore)