use travis-support/master-2014-10-06
make loading and configuring raven optional
use Travis::Metrics.setup and config metrics reporter
bump deps
notes for changes on sf-te
remove requires (moved to travis-support)
use travis-support/master
Merge pull request #11 from travis-ci/sf-te

Changes from sf-te
bump travis-support (use config.librato_source)
remove notes