4 files changed, 28 insertions, 4 deletions
diff --git a/lib/json/encodeBook.js b/lib/json/encodeBook.js
index 3bbbe0f..336b12a 100644
--- a/lib/json/encodeBook.js
+++ b/lib/json/encodeBook.js
@@ -15,6 +15,7 @@ function encodeBookToJson(book) {
         summary: encodeSummary(book.getSummary()),
         glossary: encodeGlossary(book.getGlossary()),
         readme: encodeReadme(book.getReadme()),
+        config: book.getCOnfig().getValues().toJS(),
         gitbook: {
             version: gitbook.version,
             time: gitbook.START_TIME
diff --git a/lib/output/json/onFinish.js b/lib/output/json/onFinish.js
index 107285a..ff336a2 100644
--- a/lib/output/json/onFinish.js
+++ b/lib/output/json/onFinish.js
@@ -1,4 +1,7 @@
+var path = require('path');
+
 var Promise = require('../../utils/promise');
+var fs = require('../../utils/fs');
 
 /**
     Finish the generation
@@ -7,9 +10,23 @@ var Promise = require('../../utils/promise');
     @return {Output}
 */
 function onFinish(output) {
-    // todo: copy README.json from main language
+    var book = output.getBook();
+    var outputRoot = output.getRoot();
+
+    if (!book.isMultilingual()) {
+        return Promise(output);
+    }
+
+    // Get main language
+    var languages = book.getLanguages();
+    var mainLanguage = languages.getDefaultLanguage();
 
-    return Promise(output);
+    // Copy README.json from it
+    return fs.copy(
+        path.resolve(outputRoot, mainLanguage.getID(), 'README.json'),
+        path.resolve(outputRoot, 'README.json')
+    )
+    .thenResolve(output);
 }
 
 module.exports = onFinish;
diff --git a/lib/output/json/onPage.js b/lib/output/json/onPage.js
index 54179c6..c2ee0d0 100644
--- a/lib/output/json/onPage.js
+++ b/lib/output/json/onPage.js
@@ -4,6 +4,8 @@ var Modifiers = require('../modifiers');
 var writeFile = require('../helper/writeFile');
 var getModifiers = require('../getModifiers');
 
+var JSON_VERSION = '3';
+
 /**
     Write a page as a json file
 
@@ -18,6 +20,12 @@ function onPage(output, page) {
         // Generate the JSON
         var json = JSONUtils.encodeBookWithPage(output.getBook(), resultPage);
 
+        // Delete some private properties
+        delete json.config;
+
+        // Specify JSON output version
+        json.version = JSON_VERSION;
+
         // File path in the output folder
         var filePath = PathUtils.setExtension(file.getPath(), '.json');
 
diff --git a/lib/output/website/onPage.js b/lib/output/website/onPage.js
index 751a430..1e9a131 100644
--- a/lib/output/website/onPage.js
+++ b/lib/output/website/onPage.js
@@ -38,8 +38,6 @@ function onPage(output, page) {
     .then(function(resultPage) {
         // Generate the context
         var context = JSONUtils.encodeBookWithPage(output.getBook(), resultPage);
-
-        context.config = config.getValues().toJS();
         context.plugins = {
             resources: Plugins.listResources(plugins, prefix).toJS()
         };