context.go
func (ctx *Context) ParamsEscape(name string) string {
	return template.HTMLEscapeString(ctx.Params(name))
}
func (ctx *Context) ParamsEscape(name string) string {
	return template.HTMLEscapeString(ctx.Params(name))
}
// ParamsEscape returns escapred params result.
// e.g. ctx.ParamsEscape(":uname")