Pass temperature and top_k to sampler in generator.py

[kinoc]

In generator.py I changed:

    _self.output = sample.sample_sequence(
        hparams=hparams, length=length,
        context=self.context,
        batch_size=batch_size,
        )_

to self.output = sample.sample_sequence( hparams=hparams, length=length, context=self.context, batch_size=batch_size, temperature=temperature, top_k=top_k )

I am trying some finetuned models and those values make a world of difference in coherence and quality.