In order to add SharePoint to Windows PowerShell, you have to write "add-pssnapin microsoft.sharepoint.powershell" command on top of the PowerShell. this code snippet lets you know how can we auto add,
Create shortcut with command to enable auto load SharePoint in PowerShell:
%SystemRoot%\system32\WindowsPowerShell\v1.0\powershell.exe -NoExit add-pssnapin microsoft.SharePoint.Powershell
