Upgrade to swagger-2.0

[bryce-anderson]

Swagger artifacts are out (in milestone form, but quite usable) now here. The most useful are swagger-core and swagger-models.

The documentation building needs to be nearly complete reworked, but this isn't as bad as it seems as the new swagger spec is much simpler in some ways. There is already a topic/swagger2.0 that compiles, but the generated specs are probably/certainly wrong and type models don't build at all.

I'm planning on dumping swagger 1.2 and focusing all work here so this is the place to contribute.

[bryce-anderson]

Thanks to @cencarnacion, this is complete.