Add experimental environment: tensorflow-serving (#1212)

examples/tensorflow-serving/README.md

@@ -0,0 +1,23 @@
+# Tensorflow Serving Environment Example
+
+## Create Environment 
+
+```bash
+$ fission env create --name tensorflow --image fission/tensorflow-serving --version 2
+```
+
+## Create Package
+
+```bash
+$ zip -r half_plus_two.zip ./half_plus_two
+$ fission pkg create --env tensorflow --deploy half_plus_two.zip
+```
+
+## Create Function
+
+Here, the `--entrypoint` represents the name of top directory contains trained model.
+
+```bash
+$ fission fn create --name t1 --pkg <pkg name> --env tensorflow --entrypoint "half_plus_two"
+$ fission fn test --name t1 --body '{"instances": [1.0, 2.0, 0.0]}' --method POST
+```