add experimental handlers examples

Former-commit-id: 8d8a0d15afce2554dc5926f6b9bd9c42cb95dad0

_examples/experimental-handlers/cloudwatch/simple/main.go

@@ -0,0 +1,50 @@
+package main
+
+import (
+	"time"
+
+	"github.com/kataras/iris"
+
+	"github.com/aws/aws-sdk-go/aws"
+	"github.com/aws/aws-sdk-go/service/cloudwatch"
+	cw "github.com/iris-contrib/middleware/cloudwatch"
+)
+
+// $ go get github.com/aws/aws-sdk-go/...
+// $ go run main.go
+
+func main() {
+	app := iris.New()
+	app.Use(cw.New("us-east-1", "test").ServeHTTP)
+
+	app.Get("/", func(ctx iris.Context) {
+		put := cw.GetPutFunc(ctx)
+
+		put([]*cloudwatch.MetricDatum{
+			{
+				MetricName: aws.String("MyMetric"),
+				Dimensions: []*cloudwatch.Dimension{
+					{
+						Name:  aws.String("ThingOne"),
+						Value: aws.String("something"),
+					},
+					{
+						Name:  aws.String("ThingTwo"),
+						Value: aws.String("other"),
+					},
+				},
+				Timestamp: aws.Time(time.Now()),
+				Unit:      aws.String("Count"),
+				Value:     aws.Float64(42),
+			},
+		})
+
+		ctx.StatusCode(iris.StatusOK)
+		ctx.Text("success!\n")
+	})
+
+	// http://localhost:8080
+	// should give: NoCredentialProviders
+	// which is correct, you have to authorize your aws, we asumme that you know how to.
+	app.Run(iris.Addr(":8080"))
+}