Use composer in travis
Merge pull request #61 from jeromemacias/patch-1

Use composer in travis
update swiftmailer to 5.2.*

Older versions of swiftmailer have a security issue, see https://github.com/swiftmailer/swiftmailer/commit/ac8526f5e956c19d6186bf9188a5d8f88f27acbf and http://blog.swiftmailer.org/post/88660759928/security-fix-swiftmailer-5-2-1-released
Merge pull request #59 from mentalstring/master

update swiftmailer to >=5.2.1
Merge remote-tracking branch 'upstream/master'