Add deployment key to Travis config
Tweak gpg decrypt command in .travis.yml
Test deloyment on feature branch
Add host lines to .ssh config
Add ssh user to Travis deploy
Start ssh-agent
Switch deployment to production branch
Add automated Travis deployment to production

Merge branch 'travis-deployment'

* travis-deployment:
  Switch deployment to production branch
  Start ssh-agent
  Add ssh user to Travis deploy
  Add host lines to .ssh config
  Test deloyment on feature branch
  Tweak gpg decrypt command in .travis.yml
  Add deployment key to Travis config