Added setup script

Added setup.sql script that creates table and stored procedures.

samples/features/json/todo-app/nodejs-express4-rest-api/setup/setup.sql

@@ -0,0 +1,42 @@
+DROP TABLE IF EXISTS Todo
+DROP PROCEDURE IF EXISTS createTodo
+DROP PROCEDURE IF EXISTS updateTodo
+GO
+
+CREATE TABLE Todo (
+	Id int IDENTITY PRIMARY KEY,
+	Title nvarchar(30) NOT NULL,
+	Description nvarchar(4000),
+	Completed bit,
+	TargetDate datetime2
+)
+GO
+
+INSERT INTO Todo (Title, Description, Completed, TargetDate)
+VALUES
+('Install SQL Server 2016','Install RTM version of SQL Server 2016', 0, '2016-06-01'),
+('Get new samples','Go to github and download new samples', 0, '2016-06-02'),
+('Try new samples','Install new Management Studio to try samples', 0, '2016-06-02')
+
+GO
+
+create procedure dbo.createTodo(@todo nvarchar(max))
+as begin
+	insert into Todo
+	select *
+	from OPENJSON(@todo) 
+			WITH (	Title nvarchar(30), Description nvarchar(4000),
+					Completed bit, TargetDate datetime2)
+end
+GO
+
+create procedure updateTodo(@id int, @todo nvarchar(max))
+as begin
+	update Todo
+    set Title = json.Title, Description = json.Description,
+        Completed = json.Completed, TargetDate = json.TargetDate
+    from OPENJSON( @todo )
+			WITH(   Title nvarchar(30), Description nvarchar(4000),
+					Completed bit, TargetDate datetime2) AS json
+    where Id = @id
+end