Update readme

environments/tensorflow-serving/README.md

@@ -1,37 +1,28 @@
-# Fission: Go Environment
+# Fission: Tensorflow Serving Environment
 
-This is the Go environment for Fission.
+This is the Tensorflow Serving environment for Fission.
 
-It's a Docker image containing a Go runtime, along with a dynamic loader.
+It's a Docker image containing a Go runtime, along with a tensorflow serving service.
 
-Looking for ready-to-run examples? See the [Go examples directory](../../examples/go).
+## How it works
 
-## Build this image
+Tensorflow Serving is an serving service that supports both RESTful API and gRPC endpoints. In current implementation,
+Go server launches `tensorflow_model_server` to load in model during specialization. As long as the Go server receives
+requests from router it creates a reverse proxy that connects to RESTful API endpoint exposed by tensorflow_model_server
+and get response from the upstream server for user.
 
-```
-docker build -t USER/go-runtime . && docker push USER/go-runtime
-```
-
-Note that if you build the runtime, you must also build the go-builder
-image, to ensure that it's at the same version of go:
+## Build this image
 
 ```
-cd builder && docker build -t USER/go-builder . && docker push USER/go-builder
+docker build -t USER/tensorflow-serving . && docker push USER/tensorflow-serving
 ```
 
 ## Using the image in fission
 
-You can add this customized image to fission with "fission env
-create":
-
-```
-fission env create --name go --image USER/go-runtime --builder USER/go-builder --version 2
-```
-
-Or, if you already have an environment, you can update its image:
+You can add this customized image to fission with "fission env create":
 
 ```
-fission env update --name go --image USER/go-runtime --builder USER/go-builder
+fission env create --name go --image USER/tensorflow-serving --version 2
 ```
 
 After this, fission functions that have the env parameter set to the