Modify README and Makefile.

Makefile

@@ -1,5 +1,5 @@
 app:
-	cd ./setup_files && modal deploy __main__.py
+	cd ./app && modal deploy __main__.py
 
 # `--upscaler` is a name of upscaler you want to use.
 # You can use upscalers the below:
@@ -8,7 +8,7 @@ app:
 #   - `RealESRGAN_x4plus_anime_6B`
 #   - `RealESRGAN_x2plus`
 img_by_sd15_txt2img:
-	cd ./sdcli && modal run sd15_txt2img.py \
+	cd ./cmd && modal run sd15_txt2img.py \
 	--prompt "a photograph of an astronaut riding a horse" \
 	--n-prompt "" \
 	--height 512 \
@@ -21,7 +21,7 @@ img_by_sd15_txt2img:
 	--output-format "avif"
 
 img_by_sd15_img2img:
-	cd ./sdcli && modal run sd15_img2img.py \
+	cd ./cmd && modal run sd15_img2img.py \
 	--prompt "cat wizard, gandalf, lord of the rings, detailed, fantasy, cute, adorable, Pixar, Disney, 8k" \
 	--n-prompt "" \
 	--samples 1 \
@@ -33,7 +33,7 @@ img_by_sd15_img2img:
 	--base-image-url "https://huggingface.co/datasets/huggingface/documentation-images/resolve/main/diffusers/cat.png"
 
 img_by_sdxl_txt2img:
-	cd ./sdcli && modal run sdxl_txt2img.py \
+	cd ./cmd && modal run sdxl_txt2img.py \
 	--prompt "A dog is running on the grass" \
 	--height 1024 \
 	--width 1024 \