Update README.md

Author: barkz

README.md

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-# PowerShellSDK2
+# Pure Storage PowerShell SDK 2.2 Readme
+
+The Pure Storage PowerShell SDK 2.2 provides support for REST 2.0, 2.1 and 2.2. REST 2.0 was introduced in Purity 5.3. The SDK provides the ability to automate tasks with the FlashArray that are implemented as PowerShell cmdlets based on the REST API endpoints. 
+
+### DOWNLOADS
+* [Installation Package](https://github.com/PureStorage-Connect/PowerShellSDK2/blob/master/<placeholder>.msi)
+* [Pure Storage Support -- Programming Interfaces > PowerShell](https://support.purestorage.com/Solutions/Microsoft_Platform_Guide/<placeholder>)
+* [Quick Start Guide PowerShell SDK Examples (ZIP)](https://github.com/PureStorage-Connect/PowerShellSDK/blob/master<placeholder>.zip)
+
+### RELEASE
+* [v2.2](https://github.com/PureStorage-Connect/PowerShellSDK/releases/tag/2.2)