move sessions and websocket examples, gofmt, fix misspells and experimental optimizations 🍐

Former-commit-id: cae4f94bbd404d26ab13dade02b52f81feaddf24

_examples/sessions/flash-messages/main.go

@@ -0,0 +1,43 @@
+package main
+
+import (
+	"github.com/kataras/iris"
+	"github.com/kataras/iris/context"
+
+	"github.com/kataras/iris/sessions"
+)
+
+func main() {
+	app := iris.New()
+	sess := sessions.New(sessions.Config{Cookie: "myappsessionid"})
+
+	app.Get("/set", func(ctx context.Context) {
+		s := sess.Start(ctx)
+		s.SetFlash("name", "iris")
+		ctx.Writef("Message setted, is available for the next request")
+	})
+
+	app.Get("/get", func(ctx context.Context) {
+		s := sess.Start(ctx)
+		name := s.GetFlashString("name")
+		if name == "" {
+			ctx.Writef("Empty name!!")
+			return
+		}
+		ctx.Writef("Hello %s", name)
+	})
+
+	app.Get("/test", func(ctx context.Context) {
+		s := sess.Start(ctx)
+		name := s.GetFlashString("name")
+		if name == "" {
+			ctx.Writef("Empty name!!")
+			return
+		}
+
+		ctx.Writef("Ok you are coming from /set ,the value of the name is %s", name)
+		ctx.Writef(", and again from the same context: %s", name)
+	})
+
+	app.Run(iris.Addr(":8080"))
+}