message: Update features list
diff: @@ -30,6 +30,8 @@ be productive with cquery. Here's a list of implemented features:
  * darken/fade code disabled by preprocessor
  * #include auto-complete and quick-jump (goto definition, document links)
  * explorable call tree, expandable type hierarchy (requires vscode insiders)
  + * auto-include undefined symbol
  + * auto-implement functions without a definition
  # Setup - build cquery, install extension, setup project
  