Merge pull request #5 from ZanSara/master

add .txt file of ass2
add parte of sara
parte di gio
aggiornato
Merge pull request #6 from Gianbaoluo/master

aggiornato
first of gio
complete ass2 1
minor
add image and some minor
change name order
add some little stuff
minor
minor
add parte sara
view fix
add diagram ass3
diagramma aggiornato
new diagram
update
better diagram