Create a zipkin example

[victormn]

We already have a Jeager example of tracing. Could you write a Zipkin example, please?

[odeke-em]

Hello there @victormn, thank you for the request and welcome to OpenCensus!

So we have an example test in

opencensus-go/exporter/zipkin/example_test.go

Lines 15 to 40 in 52b12e1

	package zipkin_test
	import (
	"log"
	openzipkin "github.com/openzipkin/zipkin-go"
	"github.com/openzipkin/zipkin-go/reporter/http"
	"go.opencensus.io/exporter/zipkin"
	"go.opencensus.io/trace"
	)
	func Example() {
	// import (
	// openzipkin "github.com/openzipkin/zipkin-go"
	// "github.com/openzipkin/zipkin-go/reporter/http"
	// "go.opencensus.io/exporter/trace/zipkin"
	// )
	localEndpoint, err := openzipkin.NewEndpoint("server", "192.168.1.5:5454")
	if err != nil {
	log.Print(err)
	}
	reporter := http.NewReporter("http://localhost:9411/api/v2/spans")
	exporter := zipkin.NewExporter(reporter, localEndpoint)
	trace.RegisterExporter(exporter)
	}

However, if you'd like to create a conventional example like Jaeger's in the example's directory, you are more than welcome and I'll tag other teammates @Ramonza @rakyll.

[freddygv]

Hi, I was planning on adding this. Will get a PR in this weekend.

[odeke-em]

Perfect, thank you again @freddygv!