Add link to VS Code troubleshooting guide (facebook#3399)

* Add link to VS Code troubleshooting guide

* Update README.md

Author: auchenberg

template/README.md

@@ -272,6 +272,8 @@ Then add the block below to your `launch.json` file and put it inside the `.vsco
 
 Start your app by running `npm start`, and start debugging in VS Code by pressing `F5` or by clicking the green debug icon. You can now write code, set breakpoints, make changes to the code, and debug your newly modified code—all from your editor.
 
+Having problems with VS Code Debugging? Please see their [troubleshooting guide](https://github.com/Microsoft/vscode-chrome-debug/blob/master/README.md#troubleshooting).
+
 ### WebStorm
 
 You would need to have [WebStorm](https://www.jetbrains.com/webstorm/) and [JetBrains IDE Support](https://chrome.google.com/webstore/detail/jetbrains-ide-support/hmhgeddbohgjknpmjagkdomcpobmllji) Chrome extension installed.