Update readmes

Author: liminzhu

SampleApps/WV2DeploymentVSInstallerSample/README.md

@@ -33,6 +33,7 @@ This sample showcases [deployment workflows](https://docs.microsoft.com/microsof
 
 To create a VS installer that chain-install the Evergreen WebView2 Runtime,
 
+1. Clone the repo.
 1. Edit the `product.xml` file depending on the workflow you wish to use. 
     * For "Package the Evergreen WebView2 Runtime Bootstrapper",
         * Within the `<PackageFiles CopyAllPackageFiles="false">` and `</PackageFiles>` section, un-comment the line `<PackageFile Name="MicrosoftEdgeWebview2Setup.exe" />`, and comment out other lines.

SampleApps/WV2DeploymentWiXBurnBundleSample/README.md

@@ -35,6 +35,7 @@ Packaging the Evergreen WebView2 Runtime Standalone Installer is very similar to
 
 To create a WiX installer that chain-installs the Evergreen WebView2 Runtime through Burn Bundle,
 
+1. Clone the repo.
 1. Open `../WebView2Samples.sln` with Visual Studio. 
 1. This sample is an extension to the [WV2DeploymentWiXCustomActionSample](../WV2DeploymentWiXCustomActionSample/README.md) sample. Let's open `Product.wxs` under the `WV2DeploymentWiXCustomActionSample` project, and comment out all the `<Binary>`, `<CustomAction>`, and `<Custom>` elements under `<!-- Step 4: Config Custom Action to download/install Bootstrapper -->` and `<!-- Step 5: Config execute sequence of custom action -->` so that Custom Action is not used.
 1. Open `Bundle.wxs` under the `WV2DeploymentWiXBurnBundleSample` project. Edit `Bundle.wxs` depending on the workflow you wish to use.

SampleApps/WV2DeploymentWiXCustomActionSample/README.md

@@ -34,6 +34,7 @@ This sample showcases [deployment workflows](https://docs.microsoft.com/microsof
 
 To create a WiX installer that chain-installs the Evergreen WebView2 Runtime through Custom Action,
 
+1. Clone the repo.
 1. Open `../WebView2Samples.sln` with Visual Studio, then open `Product.wxs` under the `WV2DeploymentWiXCustomActionSample` project. Edit `Product.wxs` depending on the workflow you wish to use.
     * For "Download the Evergreen WebView2 Runtime Bootstrapper through link",
         * Under `<!-- Step 4: Config Custom Action to download/install Bootstrapper -->`, uncomment the `<CustomAction Id='DownloadAndInvokeBootstrapper' ...>` element below `<!-- [Download Bootstrapper] ... -->`. Comment out other `<Binary>` and `<CustomAction>` elements.