Windows Support

[calebmeyer]

I'm trying to use this package on windows. There's no mention of the dependency on curses and fcntl in the readme or in a requirements.txt/Pipfile.

I was able to get curses installed from here, but there's no fcntl on that page.

Here's the call I'm using that's asking for it:

$ codemod --extensions rb --count '(\s+)(get|delete|put)' ''
Traceback (most recent call last):
  File "C:\Users\CM022291\AppData\Local\Programs\Python\Python36\Scripts\codemod-script.py", line 11, in <module>
    load_entry_point('codemod==1.0.0', 'console_scripts', 'codemod')()
  File "C:\Users\CM022291\AppData\Local\Programs\Python\Python36\lib\site-packages\pkg_resources\__init__.py", line 565, in load_entry_point
    return get_distribution(dist).load_entry_point(group, name)
  File "C:\Users\CM022291\AppData\Local\Programs\Python\Python36\lib\site-packages\pkg_resources\__init__.py", line 2631, in load_entry_point
    return ep.load()
  File "C:\Users\CM022291\AppData\Local\Programs\Python\Python36\lib\site-packages\pkg_resources\__init__.py", line 2291, in load
    return self.resolve()
  File "C:\Users\CM022291\AppData\Local\Programs\Python\Python36\lib\site-packages\pkg_resources\__init__.py", line 2297, in resolve
    module = __import__(self.module_name, fromlist=['__name__'], level=0)
  File "C:\Users\CM022291\AppData\Local\Programs\Python\Python36\lib\site-packages\codemod-1.0.0-py3.6.egg\codemod\__init__.py", line 1, in <module>
    from codemod.base import *  # noqa
  File "C:\Users\CM022291\AppData\Local\Programs\Python\Python36\lib\site-packages\codemod-1.0.0-py3.6.egg\codemod\base.py", line 34, in <module>
    import codemod.terminal_helper as terminal
  File "C:\Users\CM022291\AppData\Local\Programs\Python\Python36\lib\site-packages\codemod-1.0.0-py3.6.egg\codemod\terminal_helper.py", line 11, in <module>
    import fcntl
ModuleNotFoundError: No module named 'fcntl'

Would it be possible to detect windows and use naive terminal handling in that case?