don't play audio if fileURL is nil
use path components to successfully load testaudio.m4a
set player to Nil if we aren't able to load testaudio.m4a
Merge pull request #16 from tunam3lt/master

Added code to turn a view into a circle, imported quartzcore framework
Merge pull request #17 from maml/load-audio-updates

Load audio updates
proof of concept for animation when recording
Merge pull request #18 from maml/poc-for-recording-circle

proof of concept for animation when recording
remove playback animation bar on finish of play
Merge pull request #19 from maml/remove-playback-bar-on-play-finish

remove playback animation bar on finish of play
animate toolbar with playback status
Merge pull request #20 from maml/animate-playback-on-toolbar

animate toolbar with playback status
remove unused method
add 'Feed' title to controller
refactor core data setup in app delegate

- managed object context, moc, is a static variable
- instance method managedObjectContext returns the moc

TODO - prove we don't need the property managedObjectContext that was
part of the example used in class, then remove
add AudioClip entity to Model
setup feed to fetch AudioClips
add controller - FinalizeRecording

- recording's output file's name is timestamped
- update navigation item colors to salmon
- update toolbar item colors to charcoal
navigation bar updates for FinalizeRecording controller

- replaces 'share' with iOS7 share / action icon
- overrides navigation controller's default back button with 'Edit' and
  action that pops the controller
refactor feed's datasource to load from fetcher's fetched objects
remove seed data from feed