Change builder recipients adding
Add HtmlMail
Fix code style
Merge pull request #8 from slavcodev-social/8-update-builder

Change builder recipients adding
Merge remote-tracking branch 'upstream/master'
WIP: Attachment and HtmlMail model
Merge branch '9-html-mail'
Update README.md
Add mime-type property to Attachment
Reorganize Atachment class
Merge branch '9-html-mail' of github.com:slavcodev-social/ddd-components