Update README to reflect platform information
As a developer, I'd expect to find information relevant to the tooling that I'm harnessing.
As the node-kit project changed directions to that of an all-out development platform, it's necessary to update the README information.
- Remove useless information covering any history of nk.
- Add appropriate descriptions of the project to reflect that it is a platform.
- Add appropriate getting started text to ensure end-users are able to use the platform tooling properly.
- Cover the tooling up to this point.
- Add developer status information so that it is properly reflected.