Update README.md

Author: mikenelson-io

README.md

@@ -41,6 +41,7 @@ Install-Module -Name PureStoragePowerShellSDK2
 :radio_button: [Installation Package](https://github.com/PureStorage-Connect/PowerShellSDK2/blob/master/PurePowerShellSDKInstaller.msi)<br>
 :radio_button: [Pure Storage Support -- Programming Interfaces > PowerShell](https://support.purestorage.com/Solutions/Microsoft_Platform_Guide/a_Windows_PowerShell)<br>
 :radio_button: [Quick Start PowerShell SDK 2 Examples](https://github.com/PureStorage-Connect/PowerShellSDK2/blob/master/SDK2-Examples.ps1)<br>
+:radio_button: [Downloadable SDK v2 HTML Help file](http://htmlpreview.github.io/?https://github.com/PureStorage-Connect/PowerShellSDK2/blob/main/PureStoragePowerShellSDK2-Help.html)<br>
 :radio_button: [SDK version 1.x Github Repository](https://www.github.com/PureStorage-Connect/PowerShellSDK)
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