add viper configuration example and minor improvements - read HISTORY.md

_examples/configuration/viper/main.go

@@ -0,0 +1,19 @@
+package main
+
+import (
+	"fmt"
+
+	"app/config"
+
+	"github.com/kataras/iris/v12"
+)
+
+func main() {
+	app := iris.New()
+	app.Get("/", func(ctx iris.Context) {
+		ctx.TextYAML(config.C)
+	})
+
+	addr := fmt.Sprintf("%s:%d", config.C.Addr.Internal.IP, config.C.Addr.Internal.Plain)
+	app.Listen(addr, iris.WithConfiguration(config.C.Iris))
+}