Fix curl command when sending request to seldon-served model on GKE (#415)

* fix curl command when sending request to seldon-served model on GKE

* modified response

xgboost_ames_housing/README.md

@@ -186,26 +186,25 @@ kubectl port-forward $(kubectl get pods -n ${NAMESPACE} -l service=ambassador -o
 Now you are ready to send requests on `localhost:8080`
 
 ```
-curl -H "Content-Type: application/x-www-form-urlencoded" -d 'json={"data":{"tensor":{"shape":[1,37],"values":[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37]}}}' http://localhost:8080/predict
+curl -H "Content-Type:application/json" \
+  -d '{"data":{"tensor":{"shape":[1,37],"values":[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37]}}}' \
+  http://localhost:8080/seldon/xgboost-ames/api/v0.1/predictions
 ```
 
 ```
 {
-  "data": {
-    "names": [
-      "t:0", 
-      "t:1"
-    ], 
-    "tensor": {
-      "shape": [
-        1, 
-        2
-      ], 
-      "values": [
-        97522.359375, 
-        97522.359375
-      ]
+  "meta": {
+    "puid": "8buc4oo78m67716m2vevvgtpap",
+    "tags": {
+    },
+    "routing": {
     }
+  },
+  "data": {
+    "names": ["t:0", "t:1"],
+    "tensor": {
+      "shape": [1, 2],
+      "values": [97522.359375, 97522.359375]
   }
 }
 ```