make clean newlines

The newlines are not handled correctly:

```
> bet14@1.0.0 test D:\UserData\POFAB\Desktop\Betrieb\bet14
> echo "Error: no test specified" && exit 1
"Error: no test specified" 
npm
 
ERR!
 Test failed.  See above for more details.
```

Now it will output this:

```
> bet14@1.0.0 test D:\UserData\POFAB\Desktop\Betrieb\bet14
> echo "Error: no test specified" && exit 1
 
"Error: no test specified" 
npm ERR! Test failed.  See above for more details.
```