冒頭の文章を翻訳
Update classes/mongo/methods.html
Update packages/oil/refine.html
Merge pull request #165 from h2ospace/patch-2

冒頭の文章を翻訳
Merge pull request #166 from inouet/1.5/develop_japanese

Update classes/mongo/methods.html
Merge pull request #167 from mp-php/patch-3

Update packages/oil/refine.html
classes/validation/errors.html の行数を合わせる
Merge pull request #168 from kenjis/fix_line

classes/validation/errors.html の行数を合わせる
Update CREDITS.md
Merge pull request #169 from mp-php/patch-4

Update CREDITS.md