Revert 014b13c and fix easy_install fail.

Reverting this commit:
https://github.com/yola/demands/commit/014b13cce4cf40a681aae03852e5751039688c37

Doing `import demands` inside of the setup is resulting in `ImportError: No module named requests`.

Here is the full output:

```
(test)~/Yola/demands (master) $ easy_install https://...@yolapi.yola.net/media/dists/demands-1.0.3.tar.gz#md5=2fa3c82be057b78c79afa1dc0dc3a8bd
Downloading https://...@yolapi.yola.net/media/dists/demands-1.0.3.tar.gz#md5=2fa3c82be057b78c79afa1dc0dc3a8bd
Processing demands-1.0.3.tar.gz
Running demands-1.0.3/setup.py -q bdist_egg --dist-dir /var/folders/3y/7jrv6jr95fnbs9rr0vx1xwzc0000gn/T/easy_install-pXkff_/demands-1.0.3/egg-dist-tmp-puQg7H
Traceback (most recent call last):
  File "/Users/doug/.pythonbrew/venvs/Python-2.6.5/test/bin/easy_install", line 8, in <module>
    load_entry_point('setuptools==0.6c11', 'console_scripts', 'easy_install')()
  File "build/bdist.linux-i686/egg/setuptools/command/easy_install.py", line 1712, in main
  File "build/bdist.linux-i686/egg/setuptools/command/easy_install.py", line 1700, in with_ei_usage
  File "build/bdist.linux-i686/egg/setuptools/command/easy_install.py", line 1716, in <lambda>
  File "/Users/doug/.pythonbrew/pythons/Python-2.6.5/lib/python2.6/distutils/core.py", line 152, in setup
    dist.run_commands()
  File "/Users/doug/.pythonbrew/pythons/Python-2.6.5/lib/python2.6/distutils/dist.py", line 987, in run_commands
    self.run_command(cmd)
  File "/Users/doug/.pythonbrew/pythons/Python-2.6.5/lib/python2.6/distutils/dist.py", line 1007, in run_command
    cmd_obj.run()
  File "build/bdist.linux-i686/egg/setuptools/command/easy_install.py", line 211, in run
  File "build/bdist.linux-i686/egg/setuptools/command/easy_install.py", line 422, in easy_install
  File "build/bdist.linux-i686/egg/setuptools/command/easy_install.py", line 476, in install_item
  File "build/bdist.linux-i686/egg/setuptools/command/easy_install.py", line 655, in install_eggs
  File "build/bdist.linux-i686/egg/setuptools/command/easy_install.py", line 930, in build_and_install
  File "build/bdist.linux-i686/egg/setuptools/command/easy_install.py", line 919, in run_setup
  File "build/bdist.linux-i686/egg/setuptools/sandbox.py", line 62, in run_setup
  File "build/bdist.linux-i686/egg/setuptools/sandbox.py", line 105, in run
  File "build/bdist.linux-i686/egg/setuptools/sandbox.py", line 64, in <lambda>
  File "setup.py", line 2, in <module>
    import demands
  File "/var/folders/3y/7jrv6jr95fnbs9rr0vx1xwzc0000gn/T/easy_install-pXkff_/demands-1.0.3/demands/__init__.py", line 12, in <module>
ImportError: No module named requests
```