Translate packages/auth/drivers.html
Update contribute.html

一部翻訳
Merge pull request #142 from mazzo46/mazzo46/packages/auth/drivers.html

packages/auth/drivers.html を翻訳しました
Merge pull request #143 from kenjis/patch-5

Update contribute.html
Merge pull request #144 from kenjis/1.5/develop_japanese

日本語翻訳クレジット
Update CREDITS.md
Update classes/database/usage.html
Update packages/oil/refine.html

一部、直訳しにくく、若干、意訳混じりの箇所が有るので、問題あれば教えて下さい。
Merge pull request #145 from orcaaoshi/patch-5

Update CREDITS.md
Merge pull request #146 from orcaaoshi/patch-6

Update classes/database/usage.html
Merge pull request #147 from mp-php/patch-2

Update packages/oil/refine.html
Update installation/troubleshooting.html
Translated mongo docs.
Update CREDITS.md
Update classes/agent/config.html
Merge pull request #148 from yoshiakist/patch-2

Update installation/troubleshooting.html
Merge pull request #149 from inouet/1.5/develop_japanese

Translated mongo docs.
Merge pull request #150 from yoshiakist/patch-3

Update CREDITS.md
Translated mongo docs.
/classes/session/usage.html 概要一部翻訳