no longer force travis to install Socket 2
added parsing of incoming email reports

added author and domain tables
altered report table, adding from/rcpt domains, author_id.
temp disable an author only test
v0.20130517

 - send reports with zip until 7/1, gzip after
 - replace Socket 2 with Socket6 (better Windows compatibility)
 - added parsing of incoming email reports
 - added author and domain tables
 - added three related columns from/rcpt/author ids to report table
 - add email hostname to MX list when attempting SMTP delivery
 - during report delivery, check report URI max size