docs: update with notes part

Author: 0hsn

docs/setup.md

@@ -14,6 +14,22 @@ pip install -U chk
 
 To upgrade to the next released version, run the same command.
 
+:::note
+
+- You can always install directly from git
+
+  ```bash
+  # to install latest stable version
+  pip install -U git+https://github.com/chkware/cli@main
+
+  # to install a tagged version, fx: v0.4.0
+  pip install -U git+https://github.com/chkware/cli@v0.4.0
+  ```
+
+- It is recommended to [use a virtual environment](https://docs.python.org/3/library/venv.html#creating-virtual-environments) when using via `pip`.
+
+:::
+
 ### Install _CHKware_ toolset with Pipx
 
 The best way to setup any python app is manage it via [pipx](https://pypa.github.io/pipx/). Pipx is a standard PyPi python application manager. Pipx creates separate virtual environment for given installable package. So, your system have less side effect.