Initial explorer

/to @Schoonology 

Could use some feedback on the `package.json` and the versions. Should we peer depend on `loopback@1.2.x`?

/cc @sam-github @raymondfeng 

Sam - this is based on an idea you presented to clean up the initial dependencies of a new LoopBack project.

**See `example/simple.js` for basic usage / what would be included in the LoopBack project template**.