fix save_original flag saving to the same filename (invoke-ai#360)

* Update README.md with new Anaconda install steps (invoke-ai#347)

pip3 version did not work for me and this is the recommended way to install Anaconda now it seems

* fix save_original flag saving to the same filename

Before this, the `--save_orig` flag was not working. The upscaled/GFPGAN would overwrite the original output image.

Co-authored-by: greentext2 <112735219+greentext2@users.noreply.github.com>

ldm/simplet2i.py

@@ -422,10 +422,7 @@ def process_image(image,seed):
                                 f'>> Error running RealESRGAN - Your image was not upscaled.\n{e}'
                             )
                         if image_callback is not None:
-                            if save_original:
-                                image_callback(image, seed)
-                            else:
-                                image_callback(image, seed, upscaled=True)
+                            image_callback(image, seed, upscaled=True)
                         else:  # no callback passed, so we simply replace old image with rescaled one
                             result[0] = image