Update README to add regular pip install

README.md

@@ -19,14 +19,14 @@ tags:
 To install the requirements for using the OpenVINO backend, do: 
 
 ```
-pip install git+https://github.com/huggingface/optimum-intel.git#egg=optimum-intel[openvino]
+pip install optimum[openvino]
 ```
 
 This installs all necessary dependencies, including Transformers and OpenVINO.
 
 *NOTE: Python 3.7-3.9 are supported. A virtualenv is recommended.*
 
-You can use this model with Transformers *pipeline*.
+You can use this model with a Transformers *pipeline*.
 
 ```python
 from transformers import AutoTokenizer, pipeline