switchaudio-osx 0.0.1-unofficial (new formula)

This formula provides the OS X command line utility
SwitchAudioSource. Users will be able to switch audio sources
(input/output/system) using the command line and without needing
a GUI tool. It works with 10.7 Lion, 10.8 Mountain Lion, and 10.9
Mavericks.
correct system call arguments formatting per @mikemcquaid
more Formula fixes for switchaudio-osx

- inline the install path variable
- use double quotes everywhere
- per @mikemcquaid
use the official switchaudio-osx repository
use the correct binary path notation (via @@mikemcquaid)
binary path correction for the test call (via @mikemcquaid)
switchaudio-osx: add 1.0.0 bottle.