Clean up documentation (#168)

Fixes #135

doc_test.go

@@ -6,7 +6,7 @@ import (
 	"fmt"
 )
 
-func Example_comprehensiveExample() {
+func Example_tree() {
 	config, err := LoadFile("config.toml")
 
 	if err != nil {
@@ -20,10 +20,34 @@ func Example_comprehensiveExample() {
 		configTree := config.Get("postgres").(*Tree)
 		user = configTree.Get("user").(string)
 		password = configTree.Get("password").(string)
-		fmt.Println("User is ", user, ". Password is ", password)
+		fmt.Println("User is", user, " and password is", password)
 
 		// show where elements are in the file
 		fmt.Printf("User position: %v\n", configTree.GetPosition("user"))
 		fmt.Printf("Password position: %v\n", configTree.GetPosition("password"))
 	}
 }
+
+func Example_unmarshal() {
+	type Employer struct {
+		Name  string
+		Phone string
+	}
+	type Person struct {
+		Name     string
+		Age      int64
+		Employer Employer
+	}
+
+	document := []byte(`
+	name = "John"
+	age = 30
+	[employer]
+		name = "Company Inc."
+		phone = "+1 234 567 89012"
+	`)
+
+	person := Person{}
+	Unmarshal(document, &person)
+	fmt.Println(person.Name, "is", person.Age, "and works at", person.Employer.Name)
+}