Support for DockerInfo and switch to using mesos.interface
Updated the README.md with new content
Fix issues with ContainerInfo and use protobufs properly
Added a bunch of tests and refactored some stuff

I've introduced some (more to come) test cases which will allow us
to ensure the ProtoBuf->Docker logic is sound as we add new features.
Added a travis.yml
Removed testcase with no implementation
Added build status to README.md
Switch to throwing exceptions
Removed empty test suites
Added a bunch more test cases for the Launch method
Added more tests for executor info
Add a test case for the old ContainerInfo proto
Merge pull request #15 from duedil-ltd/feature/docker-info

Support for DockerInfo