Update barcode scanner example to reference plugin "phonegap-plugin-barcodescanner"
Update barcode scanner example to reference plugin "phonegap-plugin-barcodescanner"

Previously the incorrect plugin "cordova-plugin-barcodescanner" has been referenced

Change-Id: I2e318fdf66ba8186a135a28d8ddc92a94ee63ea4

eclipsesource/tabris-js,eclipsesource/tabris-js,eclipsesource/tabris-js