Update the docs

Author: mdmintz

README.md

@@ -78,6 +78,13 @@ pip install -e .  # Editable install
 
 > (When using a virtual env, the Editable install is faster.)
 
+To upgrade an existing install from a GitHub clone:
+
+```bash
+git pull  # To pull the latest version
+pip install -e .  # Or "pip install ."
+```
+
 🔵 Installing ``seleniumbase`` from PyPI:
 
 ```bash
@@ -88,6 +95,12 @@ pip install seleniumbase
 > (Add ``--force-reinstall`` to also install the latest dependencies.)
 > (Use ``pip3`` if multiple versions of Python are installed.)
 
+To upgrade an existing install from PyPI:
+
+```bash
+pip install -U seleniumbase
+```
+
 🔵 Type ``seleniumbase`` or ``sbase`` to verify that SeleniumBase was installed successfully:
 
 ```bash

help_docs/install.md

@@ -8,6 +8,12 @@
 pip install seleniumbase
 ```
 
+To upgrade an existing ``seleniumbase`` install from PyPI:
+
+```bash
+pip install -U seleniumbase
+```
+
 <h4>If installing SeleniumBase from a Git clone, use:</h4>
 
 ```bash
@@ -24,6 +30,13 @@ cd SeleniumBase/
 pip install -e .
 ```
 
+To upgrade an existing ``seleniumbase`` install from GitHub:
+
+```bash
+git pull  # To pull the latest version
+pip install -e .  # Or "pip install ."
+```
+
 <h4>If installing SeleniumBase from a <a href="https://github.com/seleniumbase/SeleniumBase">GitHub branch</a>, use:</h4>
 
 ```bash