Added docker build and quick-start

[mgaffigan]

While this might be somewhat responsive to #40, it is primarily just to provide a quick-start way for a developer to build and test. While trying to address Issue 5 I had hours of challenges getting things building happily - and shifted to docker as an escape hatch.

I do not expect this PR is ready to merge as is, but wanted to get something posted publicly. Known issues include:

• Not responsive to the acceptance criteria listed in Create OIE Docker Image #40
• Uses a personal container registry namespace, rather than https://hub.docker.com/u/openintegrationengine
• I'm not confident that I've implemented vmoptions handling correctly
• Missing examples for docker-compose and playwithdocker

That said, it does work to the point of passing tests, running server, client, and simple message processing.

I'm new to the project, so if I've missed a step please let me know.

[tonygermano]

I updated #40 with how I think the "official" docker container should be implemented. However, I really like the idea of what is presented here to use docker as a developer tool for building and testing.

I've also responded to some of your questions here #2 (comment)