readme update

Author: JocaPC

README.md

@@ -152,15 +152,29 @@ To implement REST service that handles AJAX requests that JQuery DataTables send
 Now you need to create async method that will serve JQuery DataTables AJAX requests with following classes:
  - UriParser that will parse Http request parameters that JQuery DataTables component sends
  - QueryBuilder that will create T-SQL query that will be executed. 
+
 First, you need to parse Request parameters using UriParser in order to extract the definition of query (QuerySpec object). Then you need to use QueryBuilder to create SQL query using the QuerySpec. Then you need to provide sql query to QueryPipe that will stream results to JQuery DataTables using Response.Body:
 
 ```
        // GET api/People
         [HttpGet]
-        public async Task Get()
+        public async Task Get(int draw, int start, int length)
         {            
             var querySpec = JQueryDataTables.UriParser.Parse(tableSpec, this.Request);
             var sql = QueryBuilder.Build(querySpec, tableSpec).AsJson();
+            
+            var header = System.Text.Encoding.UTF8.GetBytes(
+@"{
+    ""draw"":" + draw + @",
+    ""recordsTotal"": " + (start + length + 1) + @",
+    ""recordsFiltered"": " + (start + length + 1) + @",
+    ""data"":");
+            await Response.Body.WriteAsync(header, 0, header.Length);
+
             await sqlQuery.Stream(sql, Response.Body, "[]");
+
+            await Response.Body.WriteAsync(System.Text.Encoding.UTF8.GetBytes("}"), 0, 1);
         }
  ```
+ [JQuery DataTables](https://datatables.net/) component requires AJAX response in some pre-defined format, so you woudl need to wrap results from database with header that contains number of total and number of filtered records.
+