Pared down CircleCI yml file (for Circle v1.0)

circle.yml

machine:
  php:
    version: 7.0.4
  environment:
    WP_TESTS_DIR: /tmp/wordpress-tests-lib
    WP_CORE_DIR: /tmp/wordpress/
    PATH: $HOME/.composer/vendor/bin:$PATH

dependencies:
  pre:
    - sudo apt-get update; sudo apt-get install subversion

test:
  override:
    - |
      rm -rf $WP_TESTS_DIR $WP_CORE_DIR
      bash bin/install-wp-tests.sh wordpress_test ubuntu '' 127.0.0.1 latest
      phpunit
      WP_MULTISITE=1 phpunit