iOS: add NSPhotoLibraryAddUsageDescription key to default Info.plist
<string>application wants to use Accelerometer</string>
<key>NSPhotoLibraryUsageDescription</key>
<string>application wants to use Photo Library</string>
+ <key>NSPhotoLibraryAddUsageDescription</key>
+ <string>application wants to use Photo Library</string>
<key>NSRemindersUsageDescription</key>
<string>application wants to use Reminders</string>
<key>UIRequiresFullScreen</key>
