Merge pull request #10 from elixir-nx/jv-readme

README suggestions

Author: mortont

README.md

@@ -1,7 +1,10 @@
 # Ortex
 
-`Ortex` is a wrapper around [ONNX Runtime](https://onnxruntime.ai/) implemented as a
-(limited) `Nx.Backend` using `Rustler` and [`ort`](https://github.com/pykeio/ort).
+`Ortex` is a wrapper around [ONNX Runtime](https://onnxruntime.ai/) (implemented as
+bindings to [`ort`](https://github.com/pykeio/ort)). Ortex leverages
+[`Nx.Serving`](https://hexdocs.pm/nx/Nx.Serving.html) to easily deploy ONNX models
+that run concurrently and distributed in a cluster. Ortex also provides a storage-only
+tensor implementation for ease of use.
 
 ONNX models are a standard machine learning model format that can be exported from most ML
 libraries like PyTorch and TensorFlow. Ortex allows for easy loading and fast inference of
@@ -10,33 +13,36 @@ ML, and ARM Compute Library.
 
 ## Examples
 
-TL;DR
+TL;DR:
+
 ```elixir
 iex> model = Ortex.load("./models/resnet50.onnx")
 #Ortex.Model<
   inputs: [{"input", "Float32", [nil, 3, 224, 224]}]
   outputs: [{"output", "Float32", [nil, 1000]}]>
 iex> {output} = Ortex.run(model, Nx.broadcast(0.0, {1, 3, 224, 224}))
-iex> output |> Nx.backend_transfer(Nx.BinaryBackend) |> Nx.argmax
+iex> output |> Nx.backend_transfer() |> Nx.argmax
 #Nx.Tensor<
   s64
   499
 >
 ```
+
 Inspecting a model shows the expected inputs, outputs, data types, and shapes. Axes with
 `nil` represent a dynamic size.
 
-To see more real world examples see `examples`.
+To see more real world examples see the `examples` folder.
 
 ### Serving
+
 `Ortex` also implements `Nx.Serving` behaviour. To use it in your application's
 supervision tree consult the `Nx.Serving` docs.
 
 ```elixir
 iex> serving = Nx.Serving.new(Ortex.Serving, model)
 iex> batch = Nx.Batch.stack([{Nx.broadcast(0.0, {3, 224, 224})}])
 iex> {result} = Nx.Serving.run(serving, batch)
-iex> result |> Nx.backend_transfer |> Nx.argmax(axis: 1)
+iex> result |> Nx.backend_transfer() |> Nx.argmax(axis: 1)
 #Nx.Tensor<
   s64[1]
   [499]
@@ -54,3 +60,5 @@ def deps do
   ]
 end
 ```
+
+You will need [Rust](https://www.rust-lang.org/tools/install) for compilation to succeed.