creating a stand-alone XOS book

Change-Id: I61c6708626655c99fda7cf7ba71d370bd9a8ad65
diff --git a/docs/book.json b/docs/book.json
new file mode 100644
index 0000000..cf106cf
--- /dev/null
+++ b/docs/book.json
@@ -0,0 +1,16 @@
+{
+  "title": "XOS Guide",
+  "root": ".",
+  "structure": {
+    "summary": "SUMMARY.md"
+  },
+  "variables": {
+    "branch": "master"
+  },
+  "plugins": [
+    "anchorjs",
+    "smart-nav-collapse",
+    "page-toc",
+    "versions-select"
+  ]
+}