Update BarcodeScanner.podspec

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Merge pull request #101 from hyperoslo/fix/stop-capturing-on-deinit

Camera: stop capturing on deinit

Merge pull request #99 from hyperoslo/fix/torch-mode

Fix torch mode for front camera

Merge pull request #96 from hyperoslo/improve/info-messages

Improve: add support for customisable info messages

Merge pull request #95 from hyperoslo/fix/setting-button

Fix settings button covered by focus animation

Merge pull request #91 from hyperoslo/feature/camera-position

Feature: camera position button