Update vendor for Pug (Jade) Parser and add Iris + Pug examples in the _examples/view folder, relative to https://github.com/kataras/iris/issues/1003

Former-commit-id: e26a5701e00ec055f3bcf693c1980c7d22147310

_examples/view/template_pug_1/main.go

@@ -0,0 +1,42 @@
+// Package main shows an example of pug actions based on https://github.com/Joker/jade/tree/master/example/actions
+package main
+
+import "github.com/kataras/iris"
+
+type Person struct {
+	Name   string
+	Age    int
+	Emails []string
+	Jobs   []*Job
+}
+
+type Job struct {
+	Employer string
+	Role     string
+}
+
+func main() {
+	app := iris.New()
+
+	tmpl := iris.Pug("./templates", ".pug")
+	app.RegisterView(tmpl)
+
+	app.Get("/", index)
+
+	// http://localhost:8080
+	app.Run(iris.Addr(":8080"))
+}
+
+func index(ctx iris.Context) {
+	job1 := Job{Employer: "Monash B", Role: "Honorary"}
+	job2 := Job{Employer: "Box Hill", Role: "Head of HE"}
+
+	person := Person{
+		Name:   "jan",
+		Age:    50,
+		Emails: []string{"jan@newmarch.name", "jan.newmarch@gmail.com"},
+		Jobs:   []*Job{&job1, &job2},
+	}
+
+	ctx.View("index.pug", person)
+}

_examples/view/template_pug_1/templates/index.pug

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+doctype html
+html(lang="en")
+	head
+		meta(charset="utf-8")
+		title Title
+	body
+		p ads
+		ul
+			li The name is {{.Name}}.
+			li The age is {{.Age}}.
+
+		each _,_ in .Emails
+			div An email is {{.}}
+
+		| {{ with .Jobs }}
+			each _,_ in .
+				div
+				 An employer is {{.Employer}}
+				 and the role is {{.Role}}
+		| {{ end }}