[fi] Completed Chapter 2.2
[fi] Translated Chapter 2.3
Merge branch 'master' of http://github.com/jukkah/progit
Merge branch 'master' of https://github.com/progit/progit
Merge pull request #478 from jukkah/master

[fi] Translated Chapter 2.3
Merge branch 'progit/master' into ja