Update readme.md

Author: bewerner

readme.md

@@ -333,7 +333,7 @@ ID    origin    orientation    height    a        b        c        shape    col
 sp    vec3      vec3           float     float    float    float    float    u8vec3    material     float/vec2
 ```
 
-I also included the [Blender Python Script](resources/rt_export_script_v004.py) I used to create these scenes in Blender and export them into the .rt file format. It's incomplete though and still requires some manual edits and additions.
+I also included the [Blender Python Script](resources/rt_export_script_v004.py) I used to create these scenes in Blender and export them into the .rt file format. It's incomplete though and still requires some manual edits and additions. To use it, change the `output_file_path` on top.
 
 # Assets