README.md in cocoapods-generate-2.1.1 vs README.md in cocoapods-generate-2.2.0

@@ -101,9 +101,11 @@
                                            modules, as if `use_modular_headers!` were
                                            specified. Will error if both this option
                                            and a podfile are specified
     --single-workspace                     Whether to produce a single workspace for
                                            all podspecs specified.
+    --xcode-version=xcode_version          The Xcode version to use for producing the
+                                           consumer sample project
 ```
 <!-- end cli usage -->
 
 ## `.gen_config.yml`