iOS: update MTB libraries for frontCamera Issues

[PietroGranati]

Hi everyone, since with iOS if you try to useFrontCamera the phone lags and take about 7 second to show up I saw that MTB libraries have been updated.
In fact there is a new method: startScanningWithCamera

`/**

• Start scanning for barcodes using a specific camera. The camera input will be added as a sublayer
• to the UIView given for previewView during initialization.
• This method returns quickly and does not wait for the internal session to
• start. Set the didStartScanningBlock to get a callback when the session
• is ready, i.e., a camera picture is visible.
• @param camera The camera to use when scanning starts.
• @param resultBlock Callback block for captured codes. If the scanner was instantiated with initWithMetadataObjectTypes:previewView, only codes with a type given in metaDataObjectTypes will be reported.
• @param error Error supplied if the scanning could not start.
• @return YES if scanning started successfully, NO if there was an error.
  */

• (BOOL)startScanningWithCamera`

Do you think we can see that implemented?