Download and extaction now takes place in temporary directory

install.ps1

@@ -68,7 +68,7 @@ if (!([Security.Principal.WindowsPrincipal] `
     Write-Output " $satelliteEmoji Downloading Site.js v12.6.0$ellipsis"
     
     $currentPath = (Get-Item -Path ".\").FullName
-    Start-Process -Verb RunAs powershell.exe -WorkingDirectory $currentPath -Wait -ArgumentList "$currentPath/install.ps1"
+    Start-Process -Verb RunAs powershell.exe -Wait -ArgumentList "$currentPath/install.ps1"
 
     # We're back from the privileged window. Update this window's path immediately so that
     # the person can use the site command right away from the current session.
@@ -87,6 +87,8 @@ if (!([Security.Principal.WindowsPrincipal] `
     Write-Output ''
     Write-Output ' * Downloading Site.js v12.6.0...'
 
+    # Switch to temp folder and download the latest Site.js archive.
+    cd "~\AppData\Local\Temp\"
     Invoke-WebRequest -Uri "https://sitejs.org/releases/windows/12.6.0.tar.gz" -OutFile "12.6.0.tar.gz"
 
     Write-Output ''
@@ -114,5 +116,5 @@ if (!([Security.Principal.WindowsPrincipal] `
     Write-Output ''
 
     # Give people a chance to read the output.
-    Start-Sleep -Seconds 2
+    Start-Sleep -Seconds 1
 }

readme.md

 # Windows 10 PowerShell installer spike for Site.js
 
-The installer is pretty much working (see install.ps1).
+The installer is in install.ps1.
 
 The hardest part was getting the emoji to work! :facepalm: (see output.ps1).
 
@@ -13,7 +13,3 @@ Copy and paste into PowerShell window under Windows Terminal:
 ```
 
 (In final version, the script will be served from SiteJS.org, of course.)
-
-## TODO
-
-  - Work in a temporary directory, not the current one.