Update Paint and Paint3D README.md with new requirements and steps

Author: timotiusmargo

Samples/C#/Paint3DTest/README.md

@@ -9,19 +9,24 @@ This test project highlights some Actions API interactions below.
 
 ## Requirements
 
-- Windows 10 PC with the latest Windows 10 version (Version 1607 or later)
+- Windows 10 PC with the latest Windows 10 version (Version 1809 or later)
 - Microsoft Visual Studio 2017 or later
 
 
 ## Getting Started
 
 1. [Run](../../../README.md#installing-and-running-windows-application-driver) `WinAppDriver.exe` on the test device
-1. Open `Paint3DTest.sln` in Visual Studio
-2. Select **Test** > **Windows** > **Test Explorer**
-3. Select **Run All** on the test pane or through menu **Test** > **Run** > **All Tests**
+2. Open `Paint3DTest.sln` in Visual Studio
+3. Select **Build** > **Rebuild Solution**
+4. Select **Test** > **Windows** > **Test Explorer**
+5. Select **Run All** on the test pane or through menu **Test** > **Run** > **All Tests**
 
 > Once the project is successfully built, you can use the **TestExplorer** to pick and choose the test scenario(s) to run
 
+> If Visual Studio fail to discover and run the test scenarios:
+> 1. Select **Tools** > **Options...** > **Test**
+> 2. Under *Active Solution*, uncheck *For improved performance, only use test adapters in test assembly folder or as specified in runsettings file*
+
 
 ## Including proper appium-dotnet-driver NuGet package
 

Samples/C#/PaintTest/README.md

@@ -17,12 +17,17 @@ This test project highlights some Actions API features below.
 ## Getting Started
 
 1. [Run](../../../README.md#installing-and-running-windows-application-driver) `WinAppDriver.exe` on the test device
-1. Open `PaintTest.sln` in Visual Studio
-2. Select **Test** > **Windows** > **Test Explorer**
-3. Select **Run All** on the test pane or through menu **Test** > **Run** > **All Tests**
+2. Open `PaintTest.sln` in Visual Studio
+3. Select **Build** > **Rebuild Solution**
+4. Select **Test** > **Windows** > **Test Explorer**
+5. Select **Run All** on the test pane or through menu **Test** > **Run** > **All Tests**
 
 > Once the project is successfully built, you can use the **TestExplorer** to pick and choose the test scenario(s) to run
 
+> If Visual Studio fail to discover and run the test scenarios:
+> 1. Select **Tools** > **Options...** > **Test**
+> 2. Under *Active Solution*, uncheck *For improved performance, only use test adapters in test assembly folder or as specified in runsettings file*
+
 
 ## Including proper appium-dotnet-driver NuGet package