Fix install script --skip-8.0 --skip-8.1

Author: shivammathur

README.md

@@ -30,7 +30,7 @@ $ts      = $False         # Set $False for nts or $True for ts
 $version = '8.1'          # Set 8.0 or 8.1
 
 # Install
-New-Item -Path C:\tools\php -Type Directory -Force
+New-Item -Path $php_dir -Type Directory -Force
 Invoke-WebRequest -UseBasicParsing -Uri https://github.com/shivammathur/php-builder-windows/releases/latest/download/Get-PhpNightly.ps1 -OutFile $php_dir\Get-PhpNightly.ps1
 . $php_dir\Get-PhpNightly.ps1 -Architecture $arch -ThreadSafe $ts -Path $php_dir -Version $version