Graphics for "disabled" shortcut recorder.

Refs #17.
Moved the Cocoa and Carbon frameworks to a standalone Xcode group.
Simplified bindings support for SRRecorderControl.
Migrate to Xcode 5.
Refs #24. Prepare PR for merging.
Merge branch 'zoul-bindings' into develop
Merge branch 'master' of github.com:wireload/ShortcutRecorder into enabled
Refs #17. Add basic support for enabling/disabling the recorder control.
Merge branch 'enabled' into develop
Refs #17. Properly redraw control and update focus ring once enabled is changed.
Document support for NSEnabledBinding.
Refs #17. End recording when control is disabled.
Moved the Cocoa and Carbon frameworks into a separate group.
Moved the library files into a subfolder.
Included the demo project in the repository.
Exit the demo after its window gets closed.
Embed frameworks in the demo and set LD_RUNPATH_SEARCH_PATHS properly.
Merge pull request #26 from zoul/demo

Include demo in the main project repository.
Expose NSEnabledBinding.
Expose NSAccessibilityEnabledAttribute.