example code is wrong

[mars3142]

The button_init() function needs one more parameter, which isn't in the example.

May be you could add a real example program, which will be compiled on upload (github actions), so we are sure, that this code works.

[mauriciobarroso]

@mars3142 The example in the README.md file has been updated. I don't know how Github Actions works, but I'll look into it and try to do what you suggest.