Report to Referee

We thank the referee for the careful reading.

Concerning the comment:

>The comments of the content reviewer were:
>"This is a well written manuscript on the hydrodynamic response to the initial geometry in heavy-ion collisions. I can >recommend publication of the manuscript after a minor revision of the manuscript:
>-there has been a related piece of work done by the Duke group that should be quoted in the context of the work done >by the authors:http://arxiv.org/abs/arXiv:1009.1847" 

It was added to the manuscript the reference  http://arxiv.org/abs/arXiv:1009.1847, and was quoted properly.