Spec tests for app_delegate and rc_root_view_controller

Add unit tests for both app_delegate and rc_root_view_controller

- to aid readability of tests, in some cases, performed multiple
asserts within one it block.

- Included a commented out NSLog statement that can be uncommented
should a test failure occur in a multiple assert block in order to
isolate the failing assert.

- E.g., in the rc_root_view_controller an it block test instantiates
the 12 UI controls and views classes and includes an commented NSLog to
isolate any failure condition.