message: Document the need to set cquery.launch.workingDirectory when setting up the VSCode extension
diff: @@ -72,6 +72,8 @@ and install the `vscode-extension.vsix` extension. To do this:
  **IMPORTANT:** Please reinstall the extension when you download it - it is
  still being developed.
  +To tell the extension where to find cquery, set "cquery.launch.workingDirectory" in User Settings to the location where cquery is installed.
  +
  It's probably also worth mentioning that "cquery.launch.command" may need to be customized as well, especially if during building you used a prefix and installed into that prefix, and set "cquery.launch.workingDirectory" to the prefix (since then "cquery.launch.command" will need to be bin/cquery instead of the default release/bin/cquery).
  If you run into issues, you can view debug output by running the
  