message: update fast field codec readme
diff: @@ -10,8 +10,10 @@ Contributing is pretty straightforward. Since the bitpacking is the simplest com
  A codec needs to implement 2 traits:
  -A reader implementing `FastFieldCodecReader` to read the codec.
  -A serializer implementing `FastFieldCodecSerializer` for compression estimation and codec name + id.
  +- A reader implementing `FastFieldCodecReader` to read the codec.
  +- A serializer implementing `FastFieldCodecSerializer` for compression estimation and codec name + id.
  +
  +### Tests
  Once the traits are implemented test and benchmark integration is pretty easy (see `test_with_codec_data_sets` and `bench.rs`).
  @@ -20,8 +22,12 @@ Make sure to add the codec to the main.rs, which tests the compression ratio and
  cargo run --features bin
  ```
  +### TODO
  +- Add real world data sets in comparison
  +- Add codec to cover sparse data sets
  +
  -Example Result
  +### Codec Comparison
  ```
  +----------------------------------+-------------------+------------------------+
  | | Compression Ratio | Compression Estimation |
  