need to correct structure to cookiecutter format

https://github.com/audreyr/cookiecutter#python.

The cookiecutter don't have template for aiohttp in repository, yet. So, i wanna add our template. For that repository need have special structure.
```
hooks/
{project.name}/
cookiecutter.json
```
But for good install package all data need be localise inside same directory. I have two ways:

- split this repository and use as sub-repository (one only for template and second for util)
- do magic with `setup.py`(use `cmdclass` in setup and rewrite some methods)

@jettify @webknjaz what do u think?