Cannot install

Hi, sorry for the trouble, i am trying to install virtualenvwrapper-powershell with your project but i cannot.

First, i have a problem with a SSL required error, that i fixed by changing http for https in the distribute_setup.py, but then i have this error:

```powershell
Traceback (most recent call last):
File "setup.py", line 58, in
path = c_wchar_p(chr(0x00) * 256)
ValueError: embedded null character
```

I am using Windows 10 and Python 3.6. I hope you can help me.

Reproduce the installation on Windows 10 with Python 3.6, starting with setup.py line 58 and the earlier SSL-related change in distribute_setup.py. Check whether the reported embedded-null-character error still occurs, and consider the installation complete when virtualenvwrapper-powershell installs successfully without either error.

Written by the indexing model from the issue text.