update README.md

README.md

@@ -13,34 +13,24 @@ This code is available at *CSST GitLab*:
 A sphinx-based documentation is available at
 - [https://csst-proto.readthedocs.io/en/latest/](https://csst-proto.readthedocs.io/en/latest/)
 
-## dependency
-
-- numpy~=1.20.3
-- joblib~=1.1.0
-- astropy~=5.1
 
 ## installation
 
-`csst_common` can be installed with the following shell command
-
 ```bash
-git clone https://csst-tb.bao.ac.cn/code/csst-l1/csst_common.git
-cd csst_common
-pip install -r requirements.txt
-python setup.py install
+pip install git+https://csst-tb.bao.ac.cn/code/csst-l1/csst_common.git
 ```
 
-or a single-line command
+## dependency
+- numpy
+- astropy
+- pyyaml
+- setuptools>65.0.0
+
+install CCDS: 
 
-```bash
-sh -c "$(curl -fsSL https://csst-tb.bao.ac.cn/code/csst-l1/csst_common/-/raw/main/install.sh)"
-```
+    pip install git+https://csst-tb.bao.ac.cn/code/csst-dfs/ccds.git
 
-## instruction
+install DFS:
+    
+    sh -c "$(curl -fsSL https://csst-tb.bao.ac.cn/code/csst-dfs/csst-dfs-api/-/raw/master/tools/csst-dfs-api-install.sh)"
 
-how to import CSST parameters:
-```python
-from csst_common.params import CSST_PARAMS as CP
-print(CP)
-print(CP["mbi"]["detector2filter"])
-```