update doc

README.md

@@ -2,68 +2,23 @@
 
 MIM provides a unified API for launching and installing OpenMMLab projects and their extensions, and managing the OpenMMLab model zoo.
 
+## Major Features
+
+- **Package Management**
+
+  You can use MIM to manage OpenMMLab codebases, install or uninstall them conveniently.
+
+- **Checkpoint Management**
+
+  You can use MIM to access all checkpoints in OpenMMLab, download checkpoints, look up checkpoints that meet your need.
+
+- **Script Calling**
+
+  You can call training scripts, testing scripts and any other scripts under the `tools` directory of a specific codebase conveniently at anywhere. Calling scripts via MIM is more flexible and efficient (The command will be much shorter, check [abbreviation.md](docs/abbreviation.md)).
+
 ## Installation
 
-1. Create a conda virtual environment and activate it.
-
-    ```bash
-    conda create -n open-mmlab python=3.7 -y
-    conda activate open-mmlab
-    ```
-
-2. Install PyTorch and torchvision following the [official instructions](https://pytorch.org/), e.g.,
-
-    ```bash
-    conda install pytorch torchvision -c pytorch
-    ```
-
-    Note: Make sure that your compilation CUDA version and runtime CUDA version match.
-    You can check the supported CUDA version for precompiled packages on the [PyTorch website](https://pytorch.org/).
-
-3. Install MIM
-
-    + from pypi
-
-        ```bash
-        pip install openmim
-        ```
-
-    + from source
-
-        ```bash
-        git clone https://github.com/open-mmlab/mim.git
-        cd mim
-        pip install -e .
-        # python setup.py develop or python setup.py install
-        ```
-
-4. Auto completion (Optional)
-
-    In order to activate shell completion, you need to inform your shell that completion is available for your script.
-
-    + For Bash, add this to ~/.bashrc:
-
-        ```bash
-        eval "$(_MIM_COMPLETE=source mim)"
-        ```
-
-    + For Zsh, add this to ~/.zshrc:
-
-        ```bash
-        eval "$(_MIM_COMPLETE=source_zsh mim)"
-        ```
-
-    + For Fish, add this to ~/.config/fish/completions/mim.fish:
-
-        ```bash
-        eval (env _MIM_COMPLETE=source_fish mim)
-        ```
-
-    Open a new shell to enable completion. Or run the eval command directly in your current shell to enable it temporarily.
-
-    The above eval command will invoke your application every time a shell is started. This may slow down shell startup time significantly.
-
-    Alternatively, you can activate the script. Please refer to [activation-script](https://click.palletsprojects.com/en/7.x/bashcomplete/#activation-script)
+Please refer to [installation.md](docs/installation.md) for installation.
 
 ## Command
 
@@ -118,7 +73,6 @@ MIM provides a unified API for launching and installing OpenMMLab projects and t
 
 <details>
 <summary>2. uninstall</summary>
-
 [![asciicast](https://asciinema.org/a/416948.svg)](https://asciinema.org/a/416948)
 
 + command

docs/installation.md

@@ -0,0 +1,65 @@
+## Installation
+
+### Prepare Environment
+
+1. Create a conda virtual environment and activate it.
+
+    ```bash
+    conda create -n open-mmlab python=3.7 -y
+    conda activate open-mmlab
+    ```
+
+2. Install PyTorch and torchvision following the [official instructions](https://pytorch.org/), e.g.,
+
+    ```bash
+    conda install pytorch torchvision -c pytorch
+    ```
+
+    Note: Make sure that your compilation CUDA version and runtime CUDA version match. You can check the supported CUDA version for precompiled packages on the [PyTorch website](https://pytorch.org/).
+
+### Install MIM
+
++ from pypi
+
+    ```bash
+    pip install openmim
+    ```
+
++ from source
+
+    ```bash
+    git clone https://github.com/open-mmlab/mim.git
+    cd mim
+    pip install -e .
+    # python setup.py develop or python setup.py install
+    ```
+
+### Optional Features
+
+1. Auto completion
+
+    In order to activate shell completion, you need to inform your shell that completion is available for your script.
+
+    + For Bash, add this to ~/.bashrc:
+
+        ```bash
+        eval "$(_MIM_COMPLETE=source mim)"
+        ```
+
+    + For Zsh, add this to ~/.zshrc:
+
+        ```bash
+        eval "$(_MIM_COMPLETE=source_zsh mim)"
+        ```
+
+    + For Fish, add this to ~/.config/fish/completions/mim.fish:
+
+        ```bash
+        eval (env _MIM_COMPLETE=source_fish mim)
+        ```
+
+    Open a new shell to enable completion. Or run the eval command directly in your current shell to enable it temporarily.
+
+    The above eval command will invoke your application every time a shell is started. This may slow down shell startup time significantly.
+
+    Alternatively, you can activate the script. Please refer to [activation-script](https://click.palletsprojects.com/en/7.x/bashcomplete/#activation-script).