add Russian translation file
Merge pull request #18 from a-x-/develop

add Russian translation file
Update CHANGELOG.md
Update PHPMailer.php from version 5.2.7 to 5.2.8
Update PHPMailer SMTP from version 5.2.7 to 5.2.8
Update CHANGELOG.md
Update CHANGELOG.md
Merge pull request #19 from devplanete/develop

Update PHPMailer to version 5.2.8 and add Russian translation file