Ginkgoland is a reporter for ginkgo that creates a go test format output. This output can be parsed by go tool test2json which is used by ginkgoland.
To use it, add the reporter to the list of custom reporters in your suite file. With this everything should be in place.
RunSpecsWithCustomReporters(t, "Suite Name", []Reporter{&ginkgoland.Reporter{T: t}})
This project uses the reporter so look at the test files as an example.