make gitbook

chapter2/chapter2.html

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         <meta content="text/html; charset=utf-8" http-equiv="Content-Type">
         <meta name="robots" content="index, follow">
         <meta name="author" content="">
-        <meta name="description" content="Swift 兴趣交流群：307017261">
+        <meta name="description" content="Swift 兴趣交流群：307017261Swift 开发者社区">
         <meta name="keywords" content="gitbook,github" >
         <meta name="generator" content="www.gitbook.io">
 
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-    <div class="book"  data-level="2" data-basepath=".." data-revision="1402792177330">
+    <div class="book"  data-level="2" data-basepath=".." data-revision="1402808574723">
     <div class="book-header">
     <!-- Actions Left -->
     <a href="#" class="btn pull-left toggle-summary" aria-label="Toggle summary"><i class="fa fa-align-justify"></i></a>
@@ -587,7 +587,7 @@
 
                 <div class="page-inner">
                 
-                    <section class="normal" id="section-gitbook_632">
+                    <section class="normal" id="section-gitbook_54">
                     
                         <h1 id="swift-">Swift 教程</h1>
 <p>本章介绍了 Swift 的各种特性及其使用方法，是全书的核心部分。</p>