Error when running examples: "Segmentation fault: 11" from gevent

[SeventhHelix]

Hello,

I've installed your library and am trying to run the examples given, but am getting a gevent-related segmentation fault error immediately when running it. My terminal is cleared, this error printed, and I'm brought back to bash.

I'm running Python 2.7.9 on a mac, and pip freeze reports:

cursed==0.2.0
gevent==1.2.0
greenlet==0.4.11
six==1.10.0

This is the line it's failing on:
https://github.com/johannestaas/cursed/blob/master/cursed/app.py#L255

    def _run_windows(self):
        CursedWindowClass._fix_windows(self.MAX_WIDTH, self.MAX_HEIGHT)
        self.windows = CursedWindowClass.WINDOWS
        self.active_window = None
        for i, cw in enumerate(self.windows):
            thread = gevent.spawn(cw._cw_run, self, self.window) # crash
            cw.THREAD = thread
            self.threads += [thread]

Might be an issue with gevent on my system, but I figured I'd report it just in case.

Thanks for your hard work on the project, it looks very useful!