Added link to gist for 10.1 with IAR.

Author: michaellwest

installation/README.md

@@ -86,6 +86,12 @@ The SPE module installs like any other for Sitecore. This approach is appropriat
 
 [Download](https://github.com/SitecorePowerShell/Console/releases) the module from the GitHub releases page and install through the _Installation Wizard_.
 
+* For Sitecore 10.1 and newer along with Identity Server you should enable the provided configuration _Spe.IdentityServer.config_.
+* For Sitecore 10.1 and newer you can leverage the IAR packages. There is still the need for *dacpac* deployments because SPE includes a security user and role.
+  * An additional patch is required for 10.1 to include the location `/sitecore modules/items/`. See [Gist here](https://gist.github.com/michaellwest/87c26d25407b0a8bcfbcabfabedbbdb7).
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 ## Upgrade
 
 We've tried to make upgrading SPE as seamless as possible. The following should provide you with some basic information on what to expect when upgrading.
@@ -95,7 +101,8 @@ We've tried to make upgrading SPE as seamless as possible. The following should
 You should be able to install directly over the previous installation of 6.0+.
 
 * For Sitecore 10.1 and newer along with Identity Server you should enable the provided configuration _Spe.IdentityServer.config_.
-* For Sitecore 10.2 and newer you can leverage the IAR packages. There is still the need for *dacpac* deployments because SPE includes a security user and role.
+* For Sitecore 10.1 and newer you can leverage the IAR packages. There is still the need for *dacpac* deployments because SPE includes a security user and role.
+  * An additional patch is required for 10.1 to include the location `/sitecore modules/items/`. See [Gist here](https://gist.github.com/michaellwest/87c26d25407b0a8bcfbcabfabedbbdb7).
 
 {% hint style="info" %}
 Using packages with the *Items as Resources* (IAR) files will require additional steps to remove database records that correlate with the contents of the _*.dat_ files. Refer to the Sitecore documentation when upgrading for the process to cleanup the databases. [This post](https://www.maartenwillebrands.nl/2022/02/15/sitecore-removing-iar-items-from-the-database/) may be helpful if you wish to take a more precise approach.
@@ -115,4 +122,4 @@ Sitecore items in the content tree will potentially shuffle around into their ne
 
 ## Troubleshooting
 
-See the troubleshooting section [here](../troubleshooting.md)
+See the troubleshooting section [here](../troubleshooting.md)