Update `image_encoder_path` to a public CLIP one

Hi there, I'm proposing this PR to correct the IP Adapter Plus demo.
However, I'm not sure that is the correct CLIP model, as the correct CLIP model is not referred to anywhere

README.md

@@ -149,7 +149,7 @@ from ip_adapter.ip_adapter_faceid import IPAdapterFaceIDPlus
 v2 = False
 base_model_path = "SG161222/Realistic_Vision_V4.0_noVAE"
 vae_model_path = "stabilityai/sd-vae-ft-mse"
-image_encoder_path = "h94/IP-Adapter/models/image_encoder"
+image_encoder_path = "laion/CLIP-ViT-H-14-laion2B-s32B-b79K"
 ip_ckpt = "ip-adapter-faceid-plus_sd15.bin" if not v2 else "ip-adapter-faceid-plusv2_sd15.bin"
 device = "cuda"