Merge pull request geekcomputers#87 from Henocks/patch-2

Update batch_file_rename.py

Author: geekcomputers

batch_file_rename.py

@@ -40,9 +40,10 @@ def main():
     # Set the variable work_dir with the first argument passed
     work_dir = sys.argv[1]
     # Set the variable old_ext with the second argument passed
-    old_ext = sys.argv[2]
+    old_ext  = sys.argv[2]
     # Set the variable new_ext with the third argument passed
-    new_ext = sys.argv[3]
+    new_ext  = sys.argv[3]
+    
     batch_rename(work_dir, old_ext, new_ext)