Fix parsing of multilingual books

lib/parse/__tests__/parseBook.js

@@ -4,16 +4,26 @@ var createMockFS = require('../../fs/mock');
 describe('parseBook', function() {
     var parseBook = require('../parseBook');
 
-    pit('should parse glossary if exists', function() {
+    pit('should parse multilingual book', function() {
         var fs = createMockFS({
-            'README.md': 'Hello World',
-            'GLOSSARY.md': '# Glossary\n\n## Hello\nDescription for hello'
+            'LANGS.md': '# Languages\n\n* [en](en)\n* [fr](fr)',
+            'en': {
+                'README.md': 'Hello'
+            },
+            'fr': {
+                'README.md': 'Bonjour'
+            }
         });
         var book = Book.createForFS(fs);
 
         return parseBook(book)
         .then(function(resultBook) {
+            var languages = resultBook.getLanguages();
+            var books = resultBook.getBooks();
 
+            expect(resultBook.isMultilingual()).toBe(true);
+            expect(languages.getList().size).toBe(2);
+            expect(books.size).toBe(2);
         });
     });
 });

lib/parse/parseBook.js

@@ -62,7 +62,7 @@ function parseBook(book) {
         .then(parseConfig)
         .then(parseLanguages)
         .then(function(resultBook) {
-            if (book.isMultilingual()) {
+            if (resultBook.isMultilingual()) {
                 return parseMultilingualBook(resultBook);
             } else {
                 return parseBookContent(resultBook);