Update PyPI install instructions in README.md

Author: jmwright

README.md

@@ -40,7 +40,13 @@ cq-cli --help
 
 It is strongly recommended to use a Python virtual environment when installing via pip.
 
-cq-cli is not available on PyPI, so it must be installed from source using pip and git. git must be installed for this to work.
+To install the latest release from PyPI, use the following command:
+```
+ pip install cadquery-cli
+```
+**Note:** There was a naming collision on PyPI which required the package name to be `cadquery-cli` rather than `cq-cli`. The command name stays the same after installation though.
+
+To install the latest development version instead of the stable release, use the following command:
 
 ```
 pip install git+https://github.com/CadQuery/cq-cli.git
@@ -203,4 +209,4 @@ This repository has five GitHub Actions workflows in \`.github/workflows\`:
 
 **Builds per OS - WIP**
 - `pyinstaller.yml\`: Manually triggered PyInstaller builds for Linux, macOS, and Windows.
-- `pyinstaller-builds-actions.yml\`: Alternate/manual conda-based cross-platform PyInstaller build workflow.
+- `pyinstaller-builds-actions.yml\`: Alternate/manual conda-based cross-platform PyInstaller build workflow.