Add data sync call to get latest

doc/GetLatest.md

@@ -4,6 +4,9 @@ We've found it useful to provide a simple script which can be run on artists'
 machines to get the latest from Git, and make sure all the C++ components are
 built. 
 
+It now also automatically calls `ue4-datasync.ps1 pull` if `UE4SYNCROOT` is defined
+in the environment.
+
 While the UE editor can sometimes do this successfully on startup as well,
 it's just nicer to do it as part of the update process - the artist can then 
 just double-click a shortcut on their desktop and let it run while getting

ue4-get-latest.ps1

@@ -114,20 +114,34 @@ try {
     }
 
     # Now build
-    $args = @()
+    $cmdargs = @()
     if ($nocloseeditor) {
-        $args += "-nocloseeditor"
+        $cmdargs += "-nocloseeditor"
     }
     if ($dryrun) {
-        $args += "-dryrun"
+        $cmdargs += "-dryrun"
     }
     # Use Invoke-Expression so we can use a string as options
-    Invoke-Expression "&'$PSScriptRoot/ue4-build.ps1' dev $args"
+    Invoke-Expression "&'$PSScriptRoot/ue4-build.ps1' dev $cmdargs"
 
     if ($LASTEXITCODE -ne 0) {
         throw "Build process failed, see above"
     }
 
+    # Automatically pull lighting builds, if environment variable defined
+    if ($Env:UE4SYNCROOT) {
+        $cmdargs = @()
+        if ($nocloseeditor) {
+            $cmdargs += "-nocloseeditor"
+        }
+        if ($dryrun) {
+            $cmdargs += "-dryrun"
+        }
+        # Use Invoke-Expression so we can use a string as options
+        Invoke-Expression "&'$PSScriptRoot/ue4-datasync.ps1' pull $cmdargs"
+    
+    }
+
     Write-Output "-- Get Latest finished OK --"