This directory contains a public/private keypair generated just for this repository.
The public key is a deploy key which has been added to the GitHub repo for push access.
The private key is encrypted using travis encrypt-file and then committed to this repo.
The decrypt commands are in .travis.yml. We only decrypt these files on the master
branch because people who have forked the repo don't have access to the
$encrypted environment variables.
In /trigger.sh we use $TRAVIS_TOKEN to trigger downstream jobs - this
is the only way we can find that Travis can trigger another job.
In this case, the downstream jobs publish the frontend toolkit to npm and RubyGems.
The Travis settings contains a Travis token that belongs to @govuk-design-system-ci.