Merge pull request #383 from mengqiy/gitbook

Update how to run gitbhook

Author: k8s-ci-robot

.gitignore

@@ -1 +1,4 @@
 .idea/
+
+# Not check in node_modules to a specific arch and os.
+docs/book/node_modules/

docs/README.md

@@ -1,8 +1,9 @@
-
 # Running GitBook
 
 1. Follow the instructions at [https://toolchain.gitbook.com/](https://toolchain.gitbook.com/) to
   install gitbook.
-2. cd into the `docs/book` directory
-3. Run `gitbook serve`
-4. Visit `localhost:4000`
+1. cd into the `docs/book` directory
+1. Run `gitbook install`
+1. Run `gitbook build`
+1. Run `gitbook serve`
+1. Visit `localhost:4000`