complete corpus builder
Merge branch 'master' of github.com:confessional/confessional

* 'master' of github.com:confessional/confessional:
  Add the Tree builder
work on corpuses
Merge branch 'master' of github.com:confessional/confessional

* 'master' of github.com:confessional/confessional:
  Debut front
  Tree with NC and start + next