packages/auth/intro.html を一部翻訳
FuelPHP_docs_jp/classes/migrate.html
Update CREDITS.md
/classes/validation/methods.html 一部翻訳
/classes/validation/methods.html 一部翻訳
Merge pull request #311 from chatii/1.6_docs_jp

packages/oil/generate.html を一部翻訳
Merge pull request #312 from sharkpp/1.6/develop_japanese

packages/auth/intro.html を一部翻訳
Merge pull request #313 from raben/1.6/develop_japanese

1.6/develop japanese
Merge pull request #314 from seckie/fix_validation

/classes/validation/methods.html 一部翻訳
Update CREDITS.md