Updating README.md and environmnent file.

Author: alucantonio

README.md

@@ -22,9 +22,9 @@ elastica). Scripts to reproduce these benchmarks can be found [here](https://git
 **Features**:
 - distributed computing provided by the [`ray`](https://www.ray.io) library;
 - scikit-learn compatible interface;
-- hyperparameter configuration via YAML files;
+- hyperparameter configuration via YAML files and optimization via `optuna`;
 - support for custom operators (with/without strong-typing);
-- benchmark suite (Nguyen and SRBench) 
+- benchmark suite (Nguyen and SRBench).
 
 ## Installation
 

environment.yaml

@@ -28,3 +28,5 @@ dependencies:
       - mygrad
       - tox-conda
       - pmlb
+      - optuna
+      - optuna-integration