title: Add ZXing android project as library in android studio
body: <p>I am making an app in android studio that uses a bar code scanner. I am using the Google ZXing lib. I downloaded the zip, opened the project and added the core.jar file as instructed but the tutorial was for eclipse and there is no option to add as library in android studio. so I am stuck on how to add it. any help would be greatly appreciated :)</p>