Update install instructions to work with zsh default Mac shell
@@ -15,7 +15,7 @@ napari can be installed on most macOS, Linux, and Windows systems with
Python 3.7 and 3.8 using pip:
```sh
-pip install napari[all]
+pip install 'napari[all]'
```
napari needs a library called [Qt](https://www.qt.io/) to run its user
@@ -31,11 +31,11 @@ them.
To install napari with a specific UI framework, you can use
```sh
-pip install napari[pyqt5]
+pip install 'napari[pyqt5]'
# or
-pip install napari[pyside2]
+pip install 'napari[pyside2]'
# or
-pip install napari[all]
+pip install 'napari[all]'
```
This last option (`pip install napari[all]`) will choose a framework for
