[fi] Completed Chapter 2.2
[pl] fix double dash in comments
Merge pull request #475 from gibas/double-dash-fix

[pl] fix double dash in comments
Fail on REXML exceptions

Maruku uses REXML internally to parse the xml/html snippets. But if
the parsing fails, no error are generated and the task does not fail.

Let the REXML exceptions appear when processing a file so as to validate
html snippets also.
Merge pull request #476 from progit/fail_on_REXML_exception

Fail on REXML exceptions
[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
update typo 注意しなければならいのは ->注意点は
update typo 誰かとかの人 -> 誰かほかの人
Merge pull request #480 from sekaiya/ja2

[ja]chapter 2.4　and chapter 3.5 : update typo