Bump version to 2.5.1

CHANGES.md

@@ -2,6 +2,8 @@
 All notable changes to this project will be documented in this file.
 This project adheres to [Semantic Versioning](http://semver.org/).
 
+## 2.5.1
+- Fix calcul of `gitbook.state.root` when serving HTML index as `/`
 
 ## 2.5.0
 - Font settings, sharing and search are externalized as default plugins

package.json

@@ -1,6 +1,6 @@
 {
     "name": "gitbook",
-    "version": "2.5.0",
+    "version": "2.5.1",
     "homepage": "https://www.gitbook.com",
     "description": "Library and cmd utility to generate GitBooks",
     "main": "lib/index.js",