Update the README to handle the common Windows SSL certificate expired.

README.md

@@ -12,12 +12,47 @@ You simply use `npm` to install directly from the git repository:
 npm install git+https://git.learnjsthehardway.com/learn-javascript-the-hard-way/ljsthw-bandolier.git
 ```
 
+### Windows Expired Certificate Error
+
+_WARNING_: If you get an error on Windows of "SSL certificate has expired" it's because the root
+certificate for Let's Encrypt expired and your `git` is too old.  This happens on other platforms
+but other OS keep their certificates and `git` commands updated.  To fix it type this:
+
+```
+git update-git-for-windows -g
+```
+
+The `-g` option says to use the graphical installer, so you'll see this:
+
+```
+Git for Windows 2.19.0.windows.1 (64bit)
+Update 2.38.1.windows.1 is available
+Download and install Git for Windows 2.38.1 [N/y]? y
+```
+
+Then git will open a GUI installer window to do the installation.
+
+_IMPORTANT_:  When you get to the section that asks to use git's OpenSSL or Windows Secure Channel, pick Secure Channel. This uses the Windows encryption system which maintains accurate certificates without updating your git every time.
+
+Once you've installed it you need to close your PowerShell/Cmdr window to register the new `git` in
+the `PATH`.  After that you should be able to to type `git --version` and see the new version.
+
+## Find the Installed Package
+
 Once it's installed you can list your packages to confirm you installed the correct one:
 
 ```
 npm list
 ```
 
+The list should contain something like this:
+
+```
+ljsthw-bandolier@0.1.2 (git+https://git.learnjsthehardway.com/learn-javascript-the-hard-way/ljsthw-bandolier.git#HEXNUMBER
+```
+
+Your `HEXNUMBER` will be different from mine, but the url `git+https://git.learnjsthehardway.com/learn-javascript-the-hard-way/ljsthw-bandolier.git` should be the same.  If not then you installed the wrong thing, remove it immediately.
+
 ## Usage
 
 You now have an `npx` command named `bando-up` which lets you create start your projects: