Upgraded original RothenburgAR to Unity version 2017.4.5f1 (and upgrading from standalone vuforia to the version integrated in unity)

Assets/Plugins/Editor/Unzip.js

@@ -0,0 +1,21 @@
+import System.IO.File;
+import System.IO.Stream;
+import ICSharpCode.SharpZipLib.Core;
+import ICSharpCode.SharpZipLib.Zip;
+
+// this script unzips a container at a given path and returns a input stream to a given file in this container
+public static function Unzip(path : String, fileName : String)
+{
+    var fileStream = OpenRead(path);
+    var zipFile = new ZipFile(fileStream);
+
+    for (var zipEntry : ZipEntry  in zipFile)
+    {
+        if (zipEntry.Name == fileName)
+        {
+            return zipFile.GetInputStream(zipEntry);
+        }
+    }
+
+    return;
+}