Groundwork

Working to make apps able to be added or removed from the Location
Services preferences.
Removed CoreFoundation dependency

No more references to CoreFoundation are made.
PlistEditor.dict_add

Can now add to dictionary entries much more easily.
Merge pull request #19 from univ-of-utah-marriott-library-apple/dict-add

PlistEditor.dict_add
General functionality

Applications can now be added or removed successfully from the
appropriate plists with the right values.
Proper updating

Location Services will now properly update whenever an application is
added or removed.
Enable/add not synonymous

Enable now is designed to switch the “Authorized” bit from FALSE to
TRUE.  If the key does not exist, it will then pass the key to add and
the application will be enabled by default.
Merge pull request #21 from univ-of-utah-marriott-library-apple/modify-app

Modify app