Merge pull request #16 from wp-cli/clarify-bundled

Clarify this command as a bundled command

Author: schlessera

README.md

@@ -387,9 +387,11 @@ wp core version [--extra]
 
 ## Installing
 
-Installing this package requires WP-CLI v0.23.0 or greater. Update to the latest stable release with `wp cli update`.
+This package is included with WP-CLI itself, no additional installation necessary.
 
-Once you've done so, you can install this package with `wp package install wp-cli/core-command`.
+To install the latest version of this package over what's included in WP-CLI, run:
+
+    wp package install git@github.com:wp-cli/core-command.git
 
 ## Contributing
 

composer.json

@@ -31,6 +31,7 @@
         "branch-alias": {
             "dev-master": "1.x-dev"
         },
+        "bundled": true,
         "commands": [
             "core check-update",
             "core download",