Reorganize directory.  Isolate project source (vs. Xcode project).
Remove previous Xcode example.

Signed-off-by: David Reeder <ios@mobilesound.org>
Changes to ios-ntp--
  Adapted ios-ntp.h to include ios-ntp-prefix.h .
    Preceded with optional #define IOS_NTP_LOGGING.

  Added instance variable NetworkClock :: enableUponForegrounding.
    Allows the class to be foregrounded without re-activating NTP.

  Add NetworkClock :: networkTimeWithOffset.
    Allows fudge factor on returned time.

  Clarify Notification identifiers: kNetAssociationNotification{Good,Fail}.

  Specify numeric types in C code.

MOSNTPClock: Class interface to ios-ntp--
  Implement timer limited synchronization.
    . Provides simple backoff in case of failure.
    . Allows return to previous synchroniation values (if any) in case of error.

  Class level notifications regarding success/failure.

  NTP time and difference with arbitrary offset.

  Test whether protocol is currently active or last iteration was successful.

MOSLog: NSLog support; used by MOSNTPClock.

Signed-off-by: David Reeder <ios@mobilesound.org>
Clarify description of NTPClock.

Signed-off-by: David Reeder <ios@mobilesound.org>
Xcode example: Simple UI that demonstrates use of modified ios-ntp via MOSNTPClock.

Signed-off-by: David Reeder <ios@mobilesound.org>
Update README.

Signed-off-by: David Reeder <ios@mobilesound.org>