Changes:

- temp fix for shader class.
- added new entry.
- more updates to CLI
- fixes #3
- add #4

AssetStudio/FileReader.cs

@@ -126,6 +126,14 @@ namespace AssetStudio
             }
             return true;
         }
+
+        public static bool IsReadable(string path, Game game)
+        {
+            var reader = new FileReader(path);
+            reader = reader.PreProcessing(game);
+            reader.Dispose();
+            return reader.FileType != FileType.ResourceFile;
+        }
     }
 
     public static class FileReaderExtensions