Update Travis config: run freshclam to avoid ClamAV error; remove Ruby 1.9.3 support; start testing Ruby 2.1; simplify email recipient list
Update Travis config: run freshclam to avoid ClamAV error; remove Ruby 1.9.3 support; start testing Ruby 2.1; simplify email recipient list

samvera/hyrax,samvera/hyrax,samvera/hyrax,samvera/hyrax