Merge https://github.com/konto/MailSender-rewrite into kontoo

Conflicts:
	MandrillMailSender/MandrillResponse.cs
merge
Merge branch 'master'
Merge https://github.com/konto/MailSender-rewrite into kontoo
Merge https://github.com/konto/MailSender-rewrite into kontoo
Merge https://github.com/konto/MailSender-rewrite into kontoo
* Receiver.cs: sadasd

* MandrillRequest.cs: cos innego
* Mail.cs: dodanie konstruktora

* Receiver.cs: dodanie pol i konstruktora
dodanie subject to klasy Mail
Merge pull request #2 from milenafarf/master

zmiany w klasie Mail i Receiver