circle.yml for sbt 0.12.3

circle.yml

machine:
  timezone:
    US/Pacific

## Customize checkout
checkout:
  post:
    - git submodule update --init # use submodules

dependencies:
  pre:
    - wget http://repo.typesafe.com/typesafe/ivy-releases/org.scala-sbt/sbt-launch//0.12.3/sbt-launch.jar
    - mkdir -p ~/.sbt/.lib/0.12.3/
    - mv sbt-launch.jar ~/.sbt/.lib/0.12.3/

test:
  override:
    - sbt compile