Add CircleCI 2.0 configuration example (#556)
Add CircleCI 2.0 configuration example (#556)

* Add CircleCI 2.0 configuration example

* Adjust docs according to comments

* Adjust docs according to comments

barrycommins/testcontainers-java,outofcoffee/testcontainers-java,testcontainers/testcontainers-java,rnorth/test-containers,rnorth/test-containers,barrycommins/testcontainers-java,outofcoffee/testcontainers-java,testcontainers/testcontainers-java,outofcoffee/testcontainers-java,barrycommins/testcontainers-java,barrycommins/testcontainers-java,testcontainers/testcontainers-java,rnorth/test-containers