Merge pull request #490 from shanyi15/my-cool-stuff

change "新手入门" to "线性回归"

.tools/templates/index.cn.html.json

@@ -2,7 +2,7 @@
   "is_en": false,
   "chapters": [
     {
-      "name": "新手入门",
+      "name": "线性回归",
       "link": "./01.fit_a_line/index.cn.html"
     },
     {

README.cn.md

@@ -4,7 +4,7 @@
 [![Documentation Status](https://img.shields.io/badge/docs-latest-brightgreen.svg?style=flat)](http://book.paddlepaddle.org/)
 [![Documentation Status](https://img.shields.io/badge/中文文档-最新-brightgreen.svg)](http://book.paddlepaddle.org/index.cn.html)
 
-1. [新手入门](http://book.paddlepaddle.org/01.fit_a_line/index.cn.html)
+1. [线性回归](http://book.paddlepaddle.org/01.fit_a_line/index.cn.html)
 1. [识别数字](http://book.paddlepaddle.org/02.recognize_digits/index.cn.html)
 1. [图像分类](http://book.paddlepaddle.org/03.image_classification/index.cn.html)
 1. [词向量](http://book.paddlepaddle.org/04.word2vec/index.cn.html)

index.cn.html

@@ -109,7 +109,7 @@
                         <div class="list-group ">
                           
                             <a href="./01.fit_a_line/index.cn.html" target="content_iframe" class="list-group-item list-group-item-action" style="border: 0px; border-bottom: 2px solid #dddfe3;">
-                                新手入门
+                                线性回归
                             </a>
                           
                             <a href="./02.recognize_digits/index.cn.html" target="content_iframe" class="list-group-item list-group-item-action" style="border: 0px; border-bottom: 2px solid #dddfe3;">