update readme

Author: xuejianzhangd

README.md

@@ -7,8 +7,7 @@ Enhance your .NET applications with the [Aspose.Cells Cloud](https://products.as
 ## Quick Start Guide
 
 To get started with Aspose.Cells Cloud for .NET, follow these steps:
-
-1. Create an account at [Aspose for Cloud](https://dashboard.aspose.cloud/#/apps) and obtain your CellsCloudClientId and CellsCloudClientSecret.
+1. Create an account at [Aspose for Cloud](https://dashboard.aspose.cloud/#/apps) and obtain your ”Client Id" and "Client Secret".
 2. execute `Install-Package Aspose.Cells-Cloud` from the Package Manager Console in Visual Studio to fetch & reference Aspose.Cells Cloud SDK assembly in your project.If you already have Aspose.Cells Cloud for .NET and want to upgrade it, please execute `Update-Package Aspose.Cells-Cloud` to get the latest version.
 
 ```csharp
@@ -22,8 +21,9 @@ To get started with Aspose.Cells Cloud for .NET, follow these steps:
         {
             public void ConvertSpreadsheetPDFExample()
             {
-                //You need to set your CellsCloudClientId and CellsCloudClientSecret in the environment variables.
-                CellsApi cellsApi = new CellsApi(Environment.GetEnvironmentVariable("CellsCloudTestClientId"), Environment.GetEnvironmentVariable("CellsCloudTestClientSecret"));
+                string clientId = ""; //your client id;
+                string clientSecret=""; //your client secret;
+                CellsApi cellsApi = new CellsApi(clientId, clientSecret);
                 cellsApi.ConvertSpreadsheet(new ConvertSpreadsheetRequest { Spreadsheet = "EmployeeSalesSummary.xlsx", format = "pdf" }, "EmployeeSalesSummary.pdf");
             }
         }