updated documentation to use Cordova CLI and updated changelog for 2.3.0 release of plugin
updated documentation to use Cordova CLI and updated changelog for 2.3.0 release of plugin

Scandit/barcodescanner-sdk-cordova,Scandit/barcodescanner-sdk-cordova,Scandit/barcodescanner-sdk-cordova,Scandit/barcodescanner-sdk-cordova