Add branch info to metadata.txt
Add branch info to metadata.txt

obsoleted/AzureIoT,sandeepmistry/AzureIoT,stefangordon/AzureIoT,sandeepmistry/AzureIoT,arduino-libraries/AzureIoT,stefangordon/AzureIoT,arduino-libraries/AzureIoT,obsoleted/AzureIoT,arduino-libraries/AzureIoT