// repository readme information
readme, _, err := client.Repositories.GetReadme(context, "facebook", "react-native", nil)
if err != nil {
	fmt.Printf("Problem in getting readme information %v\n", err)
	return
}

// get content
content, err := readme.GetContent()
if err != nil {
	fmt.Printf("Problem in getting readme content %v\n", err)
	return
}

fmt.Println(content)