Update README.md

README.md

@@ -1,46 +1,20 @@
 [GPRS_CSDTK](https://github.com/Ai-Thinker-Open/GPRS_CSDTK.git)
 -----
 
+**This repo created for auto test(/build) scripts( e.g. `docker`)**
 
-toolchain and download debug tool for GPRS module
+**Only toolchain on linux for GPRS module here** and no cooltools( debug & download tools), download the full CSDTK version if you need as bellow:
 
-## How to clone ( download )
+CSDTK for Windows [here](https://ai-thinker-open.github.io/GPRS_C_SDK_DOC/en/c-sdk/installation.html)
 
-1. install `git`
+CSDTK for Linux full with cooltools [here](https://ai-thinker-open.github.io/GPRS_C_SDK_DOC/en/c-sdk/installation_linux.html)
 
-```
-sudo apt install git
-```
-
-2. install `git-lfs`
-
-you must install `git-lfs` before you clone repo, or you will not get the full files
-
-Install `git-lfs` refer to here: [https://git-lfs.github.com/](https://git-lfs.github.com/)
-
-ubuntu for example:
-
-```
-curl -s https://packagecloud.io/install/repositories/github/git-lfs/script.deb.sh | sudo bash
-sudo apt install git-lfs
-git lfs install
-```
-
-If install fail, just try again, It's the connection timeout mostly
-
-3. clone
-
-```
-git clone https://github.com/Ai-Thinker-Open/GPRS_CSDTK.git
-```
 
 ## Attention for Administrator
 
 To get a fixed link for some special usage,
 
-the package name of CSDTK for linux **MUST** be **CSDTK_Linux.tar.gz**,
-
-and **MUST** contain **CSDTK** folder, all files in the **CSDTK** folder.
+the folder name of CSDTK for linux **MUST** be **CSDTK**