do not error when _InstallPackages directory does not exist

bdukes · bdukes · commit e9dc42ae2bec · 2016-05-04T09:53:22.000-05:00
diff --git a/ZipAllLibraries.ps1 b/ZipAllLibraries.ps1
@@ -1,4 +1,4 @@
 ﻿Import-Module .\JsLibraryPackaging.psm1
-rmdir .\_InstallPackages -Recurse -Force
+rmdir .\_InstallPackages -Recurse -Force -ErrorAction SilentlyContinue
 mkdir .\_InstallPackages | Out-Null
 New-Package -Recurse
