reorganization of _examples and add some new examples such as iris+groupcache+mysql+docker

Former-commit-id: ed635ee95de7160cde11eaabc0c1dcb0e460a620

_examples/desktop/webview/main.go

@@ -0,0 +1,44 @@
+package main
+
+import (
+	"github.com/kataras/iris/v12"
+	"github.com/zserge/webview"
+)
+
+const addr = "127.0.0.1:8080"
+
+/*
+	# Windows requires special linker flags for GUI apps.
+	# It's also recommended to use TDM-GCC-64 compiler for CGo.
+	# http://tdm-gcc.tdragon.net/download
+	#
+	#
+	$ go build -ldflags="-H windowsgui" -o myapp.exe # build for windows
+	$ ./myapp.exe # run
+	#
+	#
+	# Note: if you see "use option -std=c99 or -std=gnu99 to compile your code"
+	# please refer to: https://github.com/zserge/webview/issues/188
+*/
+func main() {
+	go runServer()
+	showAndWaitWindow()
+}
+
+func runServer() {
+	app := iris.New()
+	app.Get("/", func(ctx iris.Context) {
+		ctx.HTML("<h1> Hello Desktop</h1>")
+	})
+	app.Listen(addr)
+}
+
+func showAndWaitWindow() {
+	debug := true
+	w := webview.New(debug)
+	defer w.Destroy()
+	w.SetTitle("Minimal webview example")
+	w.SetSize(800, 600, webview.HintNone)
+	w.Navigate("https://iris-go.com")
+	w.Run()
+}