Add the translation of model introduction

data/guides.yml

@@ -80,14 +80,14 @@ Controllers:
   - title: "Managing Dependencies Between Controllers"
     url: "controllers/dependencies-between-controllers"
 
-Models:
-  - title: "Introduction"
+模型:
+  - title: "介绍"
     url: "models"
-  - title: "Defining a Store"
+  - title: "创建一个存储器"
     url: "models/defining-a-store"
-  - title: "Defining Models"
+  - title: "定义模型"
     url: "models/defining-models"
-  - title: "Finding Models"
+  - title: "查找模型"
     url: "models/finding-models"
   - title: "Modifying Attributes"
     url: "models/modifying-attributes"
@@ -154,4 +154,3 @@ Understanding Ember.js:
 #Understanding Ember Data:
   #- title: "Record Lifecycle"
     #url: "understanding-ember-data/record-lifecycle"
-

source/guides/models/index.md

@@ -1,27 +1,42 @@
-## Models
+英文原文：[http://emberjs.com/guides/models/](http://emberjs.com/guides/models/)
+
+## 模型（Models）
 
 In most Ember.js apps, models are handled by [Ember Data][1]. Ember Data
 is a library, built with and for Ember.js, designed to make it easy to
 retrieve records from a server, make changes in the browser, then save
 those changes back to the server.
 
+在大部分的 Ember.js 应用里，模型是通过 [Ember Data](https://github.com/emberjs/data) 来处理的。Ember
+Data 是一个由 Ember.js 写的库，它使我们可以很方便从服务器端取回记录并动态改变浏览器中的内容，然后保存这些更改回服务器。
+
 It provides many of the facilities you'd find in server-side ORMs like
 ActiveRecord, but is designed specifically for the unique environment of
 JavaScript in the browser.
 
+你可以在服务器端找到像 ActiveRecord 这样的 ORM，不过它提供了专门为浏览器端的 Javascript 环境设计的工具方法。
+
 Without any configuration, Ember Data can load and save records and
 relationships served via a RESTful JSON API, provided it follows certain
 conventions.
 
+Ember Data 并不需要任务配置就可以通过 RESTful JSON API 的惯例来加载和保存记录和关系。
+
 We also understand that there exist many web service APIs in the world,
 many of them crazy, inconsistent, and out of your control. Ember Data is
 designed to be configurable to work with whatever persistence layer you
 want, from the ordinary to the exotic.
 
+我们也知道世界上还有很多Web服务的API，其中许多会是荒唐的，矛盾的和容易失去控制。
+Ember Data 被设计成可配置的，无论你想要怎么样的持久层它都可以满足。
+
 Currently, Ember Data ships as a separate library from Ember.js, while
 we expand the adapter API to support more features. The API described in
 this section tends to be stable, however.  Until Ember Data is included
 as part of the standard distribution, you can get your copy from the
 [GitHub page][1].
 
-[1]: https://github.com/emberjs/data
+目前， Ember Data还是作为Ember.js的一个独立的库，与此同时，我们仍然在扩展适配器的API以便支持更多功能。
+在Ember Data被作为标准配置的一部分之前，你可以从其项目的[Github主页](https://github.com/emberjs/data)获取它。
+
+-[1]: https://github.com/emberjs/data