Update app.py

app.py

@@ -6,6 +6,8 @@ os.system("mkdir -p output/DeepFashion/ckpt/pretrained")
 os.system("git clone https://github.com/prasunroy/pose-transfer.git")
 os.system("cd pose-transfer")
 os.system("pip install -r requirements.txt")
+import sys
+sys.path.append("pose-transfer")
 
 
 from api import Pose2Pose