Initial open-design proposal

On Tue, Oct 21, 2014 at 02:24:58PM -0700, Matthew Fisher wrote:
> > +## You want some shiny new feature to be added?
> 
> General contribution guidelines for styling, formatting and testing
> their code may be useful here, such as `go fmt`, `go vet`, `go test`
> etc.

CONTRIBUTING.md is read by everyone.  I think the style guide and test
docs should live in separate files, since they're not general
interest.  We should definitely link to them from here though.  On the
other hand, if the advice is so short as:

  Run `for fmt` to check you formatting and `go test` to run the test
  suite.

then having it inline here is fine.  (I'm not actually sure what `go
fmt` does, maybe it automatically fixes your formatting ;)