write should assume org if passed in the client

[russorat]

If a user sets up the client with an org, they should not have to send the org in the write function.

client = InfluxDBClient(url="http://localhost:9999", token="my-token", org="my-org")
write_api.write(bucket=bucket, record=p)

[bednar]

It works as you describe but examples/docs are not precise... I will fix it.