added note for VS2015

@msebolt Here's an example of how to do the VS2015 vs 2017 thing. I do suggest installing vs2015 so that you can see exactly what the UI text is for whatever you are working on. But the basic instructions should be identical up until the last step where you click on component X. If that's not possible, then OK to just do a generic "install the component" as the last step. Please go ahead and apply this to other PRs as appropriate.

Author: mikeblome

docs/ide/walkthrough-deploying-a-visual-cpp-application-by-using-a-setup-project.md

@@ -30,7 +30,9 @@ You need the following components to complete this walkthrough:
 1. Use the **MFC ApplicationWizard** to create a new Visual Studio solution. To find the wizard, from the **New Project** dialog box, expand the **Visual C++** node, select **MFC**, select **MFC Application**, enter a name for the project, and then click **OK**. Click **Finish**.
 
    > [!NOTE]
-   > If the **MFC Application** type is missing, select **Open Visual Studio Installer** in the left pane of the **New Project** dialog box. Install the option located under **Desktop development with C++** in the **Optional** components section, named **Visual C++ MFC for x86 and x64**.
+   > If the **MFC Application** type is missing:
+   > **Visual Studio 2017**: Select **Open Visual Studio Installer** in the left pane of the **New Project** dialog box. Install the option located under **Desktop development with C++** in the **Optional** components section, named **Visual C++ MFC for x86 and x64**.
+   > **Visual Studio 2015**: Click on the Windows Start button and type **Add Remove Programs**. Open the program from the results list and then find your Microsoft Visual Studio 2015 installation in the list of installed programs. Double-click it, then choose **Modify** and select the **Microsoft Foundation Classes** component under **Visual C++**.
   
 1. Change the active solution configuration to **Release**. From the **Build** menu, select **Configuration Manger**. From the **Configuration Manager** dialog box, select **Release** from the **Active solution configuration** drop-down box. Click **Close**.