Add intermedio.go file and update README

intermedio.go

@@ -0,0 +1,46 @@
+package main
+
+import "fmt"
+
+func main() {
+	fmt.Println("Hola mundo")
+
+	for i := 0; i < 5; i++ {
+		if i == 3 {
+			fmt.Println("Hasta el 3")
+			break
+		}
+		fmt.Println(i)
+	}
+
+	x := 2
+	switch x {
+	case 1:
+		fmt.Println("1")
+	case 2:
+		fmt.Println("2")
+		break
+	case 3:
+		fmt.Println("3")
+	default:
+		fmt.Println("default")
+	}
+
+	for i := 0; i < 5; i++ {
+		if i%2 == 0 {
+			fmt.Println(i, " es par")
+			continue
+		}
+		fmt.Println(i)
+	}
+
+	for i := 1; i <= 3; i++ {
+		for j := 1; j <= 3; j++ {
+			if j == 2 {
+				continue
+			}
+			fmt.Println("i=", i, "j=", j)
+		}
+	}
+
+}