Update the Windows install.

windows/resources/install-freeswitch.ps1

@@ -0,0 +1,51 @@
+#Download and install latest version on FreeSWITCH 1.6. 
+#Set it to auto start
+Function Install-FreeSWITCH() {
+	. .\resources\get-link.ps1
+	. .\resources\get-file.ps1
+    . .\resources\get-cpu.ps1
+
+	if (Get-Installed-App "FreeSWITCH*") {
+		Write-Host FreeSWITCH is already installed
+		return
+	}
+
+	$cpu = Get-CPU
+	if ($cpu -eq "x86") {
+		$url = "http://files.freeswitch.org/windows/installer/x86/"
+	}
+	else {
+		$url = "http://files.freeswitch.org/windows/installer/x64/"
+	}
+	$link = Get-Link $url "*${switch_version}*"
+	Write-Host Download FreeSWITCH from $link -ForegroundColor Cyan
+	$filename = Get-File $link
+
+	#Required for FreeSWITCH
+	if ( ([System.Environment]::OSVersion.Version.Build -lt 9600) -and -not (Get-Installed-App "FreeSWITCH*") -and -not (Get-HotFix -id KB2999226)) {
+		Write-Host Install update KB2999226
+		Return
+	}
+
+	Write-Host "Install Freeswitch" -ForegroundColor Cyan
+
+	#Remove FreeSWITCH
+	Start-Process  MsiExec.exe "/x {B004A325-1272-47E5-A415-A74E9FC99865} /passive /qb" -Wait
+	#Install new version
+	Start-Process msiexec "/i $filename /passive /qb" -Wait
+	#Configure service to auto start
+	Start-Process sc "config FreeSWITCH start= auto" -Wait -NoNewWindow
+	#Start-Service FreeSWITCH
+
+	#Set permissions to folder "c:\Program Files\FreeSWITCH" for PHP (IIS)
+	if ($iis_identity -ne "LocalSystem") {
+		Icacls "c:\Program Files\FreeSWITCH" /grant "NetworkService:(OI)(CI)M"
+	}
+
+	#mod_lua.dll is missing from recent windows builds
+	$lua = "C:\Program Files\FreeSWITCH\mod\mod_lua.dll"
+	if ( -not (Test-Path $lua) )  {
+		Get-File "https://raw.github.com/sergey-mz/fusionpbx-install.sh/master/windows/resources/$cpu/mod_lua.dll"
+		Copy-Item ".\mod_lua.dll" -Destination $lua
+	}    
+}