added option request

app.py

@@ -80,7 +80,14 @@ def process(image, items):
     preds = detector("https://visualization.graberblinds.com/assets/sample_sessions/02e1d080-c4bf-4cdc-b1bc-f39f9b2a2230_thumb.jpg", candidate_labels=items)
     return preds
 
-
+@app.route("/",methods=["OPTION"])
+def cors():
+     response=app.make_response()
+     response.headers.add("Access-Control-Allow-Origin", "*")
+     response.headers.add("Access-Control-Allow-Headers", "*")
+     response.headers.add("Access-Control-Allow-Methods", "*")
+     response.content_type="application/json"
+     return response
 
 @app.route("/",methods=["POST"])
 def detect():