1 files changed, 13 insertions, 0 deletions
diff --git a/lib/book.js b/lib/book.js
index 5335896..6c8fdbb 100644
--- a/lib/book.js
+++ b/lib/book.js
@@ -33,6 +33,9 @@ var Book = function(root, options, parent) {
 
 	// Langs
 	this.langs = [];
+
+	// Sub-books
+	this.books = [];
 };
 
 // Initialize and parse the book: config, summary, glossary
@@ -73,6 +76,16 @@ Book.prototype.init = function() {
 		if (multilingal) return;
 		return that.parseGlossary();
 	})
+
+	.then(function() {
+		// Init sub-books
+		return _.reduce(that.books, function(prev, book) {
+			return prev.then(function() {
+				return book.init();
+			});
+		}, Q());
+	})
+
 	.thenResolve(this);
 };