Update README.md
Update README.md
Fix preview layer orientation in photo mode
Merge pull request #24 from cacheflowe/fix-photo-preview

Fix preview layer orientation in photo mode
Base.xcconfig : add target OS
Vision.xcodeproj : move deployment target to the config file
Update status bar handling for iOS 7
Update Base.xcconfig for 64-bit
PBJVision: set orientation in UIImage conversion, fixes GH-28
PBJVision: fix static analyzer warning for uninitialized variable
PBJVision: add a type cast for precision loss of setting verts
PBJVision: fix potential crash setting videoSettings with a nil capture output
PBJVisionUtilities: correct metadata timestamp
Remove the observers to PBJCamera on dealloc
Merge pull request #32 from ethanjdiamond/master

Remove the observers to PBJCamera on dealloc
Update README.md
Track captured audio and video length in seconds. Closes #5
Move visionDidCaptureVideoSample and visionDidCaptureAudioSample callbacks calls below CFRelease(bufferToWrite)
Merge pull request #36 from yury/elapsed_time

Track captured audio and video length in seconds. Closes #5
added comments