Removed echo in order not to pollute logs

[lukaszb]

Currently when app is deployed with this buildpack, it logs every 1 second.

[stevepeak]

From my understanding it's intended to be a safe guard.

In your application add this which will inform the buildpack that your app has started properly.

with open('/tmp/app-initialized', 'a'):
    os.utime('/tmp/app-initialized', None)