Add toc at the end of pdf

lib/generate/ebook/index.js

@@ -29,6 +29,7 @@ Generator.prototype.finish = function() {
     return BaseGenerator.prototype.finish.apply(this)
     .then(function() {
         var d = Q.defer();
+        var format = that.options.extension || path.extname(that.options.output);
 
         if (!that.options.cover && fs.existsSync(path.join(that.options.output, "cover.jpg"))) {
             that.options.cover = path.join(that.options.output, "cover.jpg");
@@ -44,6 +45,10 @@ Generator.prototype.finish = function() {
             "--level3-toc": "descendant-or-self::*[contains(concat(' ', normalize-space(@class), ' '), ' book-chapter-3 ')]"
         };
 
+        if (format == "pdf") {
+            _options["--pdf-add-toc"] = true;
+        }
+
         var command = [
             "ebook-convert",
             path.join(that.options.output, "index.html"),

lib/utils/string.js

@@ -12,6 +12,7 @@ function optionsToShellArgs(options) {
     return _.chain(options)
     .map(function(value, key) {
         if (value == null) return null;
+        if (value == true) return key;
         return key+"="+escapeShellArg(value);
     })
     .compact()