ex01: doc: add Lucas and the student ID's for the others
ex01: doc: show authors over two lines
ex01: doc: use correct output image name
ex01: doc: some adjustments
ex01: do not auto-run the application before compiling the documentation
exo1: fix code indents
ex01: doc: make images a bit smaller
ex01: doc: put the two images on a singe line
ex01: doc: manually include the code (only the function we implemented)
ex01: use a grey-scale image, so we do not have to print in color ;-)
ex01: "beautify" the code a bit (C++ style)