Configuration error with python 3.3

[vaz-ar]

On the first run of willie 4.4.1, installed from pip, the configuration file can't be created due to the use of raw_input(), function replaced by input() in python3.

here is the error :

Welcome to Willie!
I can't seem to find the configuration file, so let's generate it!

Please answer the following questions to create your configuration file:

Encountered an error while writing the config file. This shouldn't happen. Check permissions.
Traceback (most recent call last):
  File "/home/willie/IRC/bin/willie", line 213, in <module>
    main()
  File "/home/willie/IRC/bin/willie", line 131, in main
    create_config(configpath)
  File "/home/willie/IRC/lib/python3.3/site-packages/willie/config.py", line 450, in create_config
    config._core()
  File "/home/willie/IRC/lib/python3.3/site-packages/willie/config.py", line 298, in _core
    'Willie')
  File "/home/willie/IRC/lib/python3.3/site-packages/willie/config.py", line 228, in interactive_add
    value = raw_input(prompt + ' [%s]: ' % default) or default
NameError: global name 'raw_input' is not defined

If someone can reproduce the problem I'll submit a pull request

[vaz-ar]

I reproduced it on another computer