Using setuptools instead of distutils.

When use  distutils.core. You can see it:

```
/usr/lib64/python2.7/distutils/dist.py:267: UserWarning: Unknown distribution option: 'install_requires'
```

In fact, you want to install dependencies are not installed.  need to be using setuptools instead of distutils.

To see this url get more: [Differences between distribute, distutils, setuptools and distutils2?](http://stackoverflow.com/questions/6344076/differences-between-distribute-distutils-setuptools-and-distutils2)