Fix make script

Compress-Archive on powershell doens't handle sub folder properly

Signed-off-by: pdulvp <pdulvp@laposte.net>

README.md

@@ -110,7 +110,7 @@ By clicking on one of them, it will highlight elements on the page and indicates
 
 ![Add item](images/issue-on-tab.png)
 
-### Advanced items editor
+## Advanced items editor
 
 Items can be edited within an advanced editor:
 

make.ps1

@@ -0,0 +1,12 @@
+#Requires -Modules @{ ModuleName="Microsoft.PowerShell.Archive"; ModuleVersion="1.2.5" }
+
+$foo = (Get-Content 'manifest.json' | Out-String | ConvertFrom-Json)
+
+Write-Host $foo.version
+$name = $foo.version+".zip"
+if (!(Test-Path $name -PathType leaf))
+{
+    &  "C:\Program Files\7-Zip\7z.exe" -tzip a $name manifest.json background.js _locales content_scripts icons ui 
+} else {
+    Write-Host $foo.version exists
+}