!4 合入v0.0.3

* ignore sdkconfig.old

.gitignore

@@ -46,6 +46,7 @@ app*
 *.su
 *.idb
 *.pdb
+*.old
 
 # Kernel Module Compile Results
 *.mod*

README.md

@@ -4,7 +4,7 @@
  * SPDX-License-Identifier: Apache-2.0.
  * 
  * @Date: 2021-07-01 18:12:33
- * @LastEditTime: 2021-07-05 15:17:27
+ * @LastEditTime: 2021-07-07 17:01:39
  * @Description:  This files is for 
  * 
  * @Modify History: 
@@ -33,7 +33,7 @@ $ cd ./ft_sdk
 
 - 选择在线方式安装Standalone SDK在~/ft_sdk
 ```
-$ ./export.sh -online
+$ ./install.sh -online
 
 ```
 ![download cc](https://images.gitee.com/uploads/images/2021/0701/190528_d93eb2f0_8736513.png "download cc.png")
@@ -44,7 +44,7 @@ $ ./export.sh -online
 - 将下载的编译器安装包放置在'~/ft_sdk/tools'路径下
 - 安装SDK开发环境，没有打印错误信息表示安装成功
 ```
-$ ./export.sh
+$ ./install.sh
 Please type in 'source ./export.sh'
 Phytium Embedded SDK Setup Done!!
 Install AARCH32 Compiler at  /home/ubuntu/ft_sdk/tools/gcc-arm-none-eabi-10-2020-q4-major