add_guides for paddle test=develop (#2561)

* add_guides for paddle test=develop

* add_guides to index test=develop

* fix_guides_index test=develop

* fix_en_docs test=develop

* remove old index test=develop

doc/paddle/guides/index_cn.rst

+########
+使用教程
+########
+
+PaddlePaddle (PArallel Distributed Deep LEarning)是一个易用、高效、灵活、可扩展的深度学习框架。
+
+您可参考PaddlePaddle的 `Github <https://github.com/PaddlePaddle/Paddle>`_ 了解详情，也可阅读 `版本说明 <../release_note_cn.html>`_ 了解新版本的特性。
+
+让我们从学习PaddlePaddle基本概念这里开始：
+
+- `版本转换工具 <./migration_cn.html>`_：介绍 Paddle转换工具的使用
+
+
+..  toctree::
+    :hidden:
+
+    migration_cn.rst

doc/paddle/guides/index_en.rst

+########
+Guides
+########
+
+PaddlePaddle (PArallel Distributed Deep LEarning) is a
+simple, efficient and extensible deep learning framework.
+
+Please refer to  `PaddlePaddle Github <https://github.com/PaddlePaddle/Paddle>`_ for details, and  `Release Note <../release_note_en.html>`_ for features incorporated in current version.
+
+Let's start with studying basic concept of PaddlePaddle:
+
+- `migration tools <./migration_en.html>`_：how to use migration tools to upgrade your code.
+
+
+..  toctree::
+    :hidden:
+
+    migration_en.rst

doc/paddle/guides/migration.rst

+.. _guides_migration:
+
+==================
+Migration Tools
+==================
+
+how to use migration tools to upgrade your codes.

doc/paddle/guides/migration_cn.rst

+.. _cn_guides_migration:
+
+============
+版本转换工具
+============
+
+这是版本转换工具的说明。

doc/paddle/guides/migration_en.rst

+.. _guides_migration:
+
+==================
+Migration Tools
+==================
+
+how to use migration tools to upgrade your codes.

doc/paddle/index_cn.rst

@@ -11,7 +11,6 @@
     :maxdepth: 1
 
     install/index_cn.rst
-    beginners_guide/index_cn.rst
-    advanced_guide/index_cn.rst
+    guides/index_cn.rst
     api/index_cn.rst
     release_note_cn.md

doc/paddle/index_en.rst

@@ -5,7 +5,6 @@
     :maxdepth: 1
 	
     install/index_en.rst
-    beginners_guide/index_en.rst
-    advanced_guide/index_en.rst
+    guides/index_en.rst
     api/index_en.rst
     release_note_en.md