Minor language corrections
Fix missing semi-colon in example code
Update and complete Italian translation

Reflect the latest version of idiomatic-css in the Italian translation.
Merge branch 'master' of git://github.com/necolas/idiomatic-css

# By Marco Trulla (2) and Nicolas Gallagher (1)
# Via Nicolas Gallagher
* 'master' of git://github.com/necolas/idiomatic-css:
  Update and complete Italian translation
  Fix missing semi-colon in example code
  Minor language corrections