GitHub is more than just a place to share code. It's a place to keep tabs on your favorite developers and projects, easily contribute fixes and new features, and visualize what's going on inside your codebase!
G. Reinmann, and W. Sesink. Methodologie und Methoden medienpädagogischer Forschung. Jahrbuch Medienpädagogik 10, Springer Fachmedien, Wiesbaden, (2013)