update addressbook example

csharp/src/AddressBook/AddPerson.cs

@@ -86,7 +86,7 @@ namespace Google.Protobuf.Examples.AddressBook
                         break;
                 }
 
-                person.Phone.Add(phoneNumber);
+                person.Phones.Add(phoneNumber);
             }
             return person;
         }
@@ -119,7 +119,7 @@ namespace Google.Protobuf.Examples.AddressBook
             }
 
             // Add an address.
-            addressBook.Person.Add(PromptForAddress(Console.In, Console.Out));
+            addressBook.People.Add(PromptForAddress(Console.In, Console.Out));
 
             // Write the new address book back to disk.
             using (Stream output = File.OpenWrite(args[0]))

csharp/src/AddressBook/ListPeople.cs

@@ -42,7 +42,7 @@ namespace Google.Protobuf.Examples.AddressBook
         /// </summary>
         private static void Print(AddressBook addressBook)
         {
-            foreach (Person person in addressBook.Person)
+            foreach (Person person in addressBook.People)
             {
                 Console.WriteLine("Person ID: {0}", person.Id);
                 Console.WriteLine("  Name: {0}", person.Name);
@@ -51,7 +51,7 @@ namespace Google.Protobuf.Examples.AddressBook
                     Console.WriteLine("  E-mail address: {0}", person.Email);
                 }
 
-                foreach (Person.Types.PhoneNumber phoneNumber in person.Phone)
+                foreach (Person.Types.PhoneNumber phoneNumber in person.Phones)
                 {
                     switch (phoneNumber.Type)
                     {

csharp/src/AddressBook/SampleUsage.cs

@@ -46,7 +46,7 @@ namespace Google.Protobuf.Examples.AddressBook
                 Id = 1,
                 Name = "Foo",
                 Email = "foo@bar",
-                Phone = { new Person.Types.PhoneNumber { Number = "555-1212" } }
+                Phones = { new Person.Types.PhoneNumber { Number = "555-1212" } }
             };
             using (MemoryStream stream = new MemoryStream())
             {
@@ -61,7 +61,7 @@ namespace Google.Protobuf.Examples.AddressBook
             // And read the address book back again
             AddressBook restored = AddressBook.Parser.ParseFrom(bytes);
             // The message performs a deep-comparison on equality:
-            if (restored.Person.Count != 1 || !person.Equals(restored.Person[0]))
+            if (restored.People.Count != 1 || !person.Equals(restored.People[0]))
             {
                 throw new ApplicationException("There is a bad person in here!");
             }