Bump version to 0.5.6

Fix GitbookIO/gitbook.io#101 and GitbookIO/gitbook.io#102

lib/parse/progress.js

@@ -11,9 +11,6 @@ var calculProgress = function(navigation, current) {
         nav.path = path;
         return nav;
     })
-    .sortBy(function(nav) {
-        return parseFloat(nav.level);
-    })
     .map(function(nav, i) {
         // Calcul percent
         nav.percent = (i * 100) / Math.max((n - 1), 1);

lib/parse/summary.js

@@ -100,11 +100,13 @@ function parseChapter(nodes, nums) {
 function defaultChapterList(chapterList) {
     var first = _.first(chapterList);
 
-    var chapter = parseChapter(first, [0]);
+    if (first) {
+        var chapter = parseChapter(first, [0]);
 
-    // Already have README node, we're good to go
-    if(chapter.path === 'README.md') {
-        return chapterList;
+        // Already have README node, we're good to go
+        if(chapter.path === 'README.md') {
+            return chapterList;
+        }
     }
 
     return [

lib/utils/lang.js

@@ -2,6 +2,7 @@ var MAP = {
     'py': 'python',
     'js': 'javascript',
     'rb': 'ruby',
+    'csharp': 'cs',
 };
 
 function normalize(lang) {

package.json

@@ -1,6 +1,6 @@
 {
     "name": "gitbook",
-    "version": "0.5.5",
+    "version": "0.5.6",
     "homepage": "http://www.gitbook.io/",
     "description": "Library and cmd utility to generate GitBooks",
     "main": "lib/index.js",