It is good practice to use the "with" keyword when dealing with file objects. This has the advantage that the file is properly closed after its suite finishes, even if an exception is raised on the way. It is also much shorter than writing equivalent try-finally blocks
For #27
* Shows status of chopchop and arpreplay attacks.
* Fakeauth runs continously in the background, reassociating every 30 sec
* Detects fakeauth success/failure, shows in attack status line.
Aireplay can optionally NOT store the process output (via `devnull=False`).
By-default, Aireplay attacks will not capture aireplay-ng output, to
avoid deadlock when overloading the OS buffer (see #21).
