Refactored Module class phpdocs
Refactored MailOptions service name to fit namespace
Refactored MailOptions adapter property to accept a Sendmail or Smtp transport object or a string with the name of the class to be instantiated. If an invalid value is provided an InvalidArgumentException is thrown
Added SSL option to configuration
fixes #5 Refactored MailServiceFactory to take into account ssl options
Merge branch 'develop'