extended instructions for installing module via Install-Module

Author: ffeldhaus

README.md

@@ -4,9 +4,15 @@ StorageGRID Webscale PowerShell Module
 Installation
 ------------
 
-Download latest release from https://github.com/ffeldhaus/StorageGRID-Webscale/releases/latest.
+The recommended way to install the PowerShell Module is through the new Install-Module Cmdlet available in PowerShell 5. Consider installing PowerShell 5 from https://www.microsoft.com/en-us/download/details.aspx?id=50395. Then run
 
-Extract StorageGRID-Webscale.zip to your preferred PowerShell Module location (e.g. `$HOME\WindowsPowershell\Documents\WindowsPowerShell\Modules` or `C:\Windows\System32\WindowsPowerShell\v1.0\Modules`).
+```powershell
+Install-Module StorageGRID-Webscale
+```
+
+The StorageGRID Webscale PowerShell Cmdlets require at least PowerShell 3.0 and .NET 4.5. Microsoft has documented the required procedures to install PowerShell 3.0 in the article [Installing Windows PowerShell](https://technet.microsoft.com/de-de/library/hh847837.aspx?f=255&MSPPError=-2147217396).
+
+If you can't install via `Install-Module` you can download the latest version of OnCommand-Insight.zip from https://github.com/ffeldhaus/StorageGRID-Webscale/releases/latest. Then extract StorageGRID-Webscale.zip to your preferred PowerShell Module location (e.g. for current user to `$HOME\WindowsPowershell\Documents\WindowsPowerShell\Modules` or for all users to `C:\Windows\System32\WindowsPowerShell\v1.0\Modules`).
 
 Usage
 -----