Removed a space in the URL
Renamed to suit the english syllabus

--HG--
rename : 0_introduzione/quine.py => 0_introduction/quine.py
rename : 0_introduzione/rice.pdf => 0_introduction/rice.pdf
rename : 0_introduzione/rice.py => 0_introduction/rice.py
rename : 0_introduzione/rice.tex => 0_introduction/rice.tex