Programmatically adjust a screen's brightness

Create utility class to get/set screen's brightness programmatically
Create constants file
Add quit button to menu
Implement basic logic - if it is time for a walk, begin the walk. If the computer hasn't been used for the length of a walk, log it as a walk
Only listen for input events when the app is activated
Cleanup & documentation
Remember the user's previous brightness, and restore it when waking
Show the About screen when the about menu item is selected
Quit app when the quit menu item is pressed
Implement preferences
Use GitHub gitignore
API cleanup
Update nibs for Xcode 5
Bring about window to front when pressing about button
Custom status item subview to allow for left & right click behavior
Create preferences screen
Rename
Add duration sliders to preferences view
Set up preferences view
Allow ctrl-clicking or command-clicking to register as a right mouse click
Convert from seconds to minutes for UI
Show prefs at start & activate at start if prefs are set
Register for alert-style notifications