Improve process for adding bindings to path

[BenjaminRodenberg]

I think the current process for adding the bindings to the path is not very user-friendly. Maybe this is not so bad for seasoned MATLAB users, but I got very confused. I would suggest to add a script that automatically adds the folder containing the MATLAB bindings to the path and startup.m. The following commands were helpful for me:

• edit(fullfile(userpath,'startup.m')) to open the user's startup.m file (from https://de.mathworks.com/help/matlab/ref/startup.html)
• pwd to get the current folder (assuming the user has just compiled the matlab bindings using compile_matlab_bindings_for_precice.m