added venv setup documentation for windows

docs/Using-Virtual-Environment.md

 # Using Virtual Environment
 
 ## What is a Virtual Environment?
-A Virtual Environment is a walled garden for Python projects.  
+A Virtual Environment is a self contained directory tree that contains a Python installation 
+for a particular version of Python, plus a number of additional packages.  
-1. Firstly, it makes dependency management for the project easy.
-1. Secondly, it enables using and testing of different library versions by quickly 
+1. It makes dependency management for the project easy.
+1. It enables using and testing of different library versions by quickly 
 spinning up a new environment and verifying the compatibility of the code with the
 different version. 
 
 
+
+## Installing Pip (Required)
+
+1. Download the `get-pip.py` file using the command `curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py`
+1. Run the following `python3 get-pip.py`
+1. Check pip version using `pip3 -V`
+
+Note (for Ubuntu users): If the `ModuleNotFoundError: No module named 'distutils.util'` error is encountered, then
+python3-distutils needs to be installed. Install python3-distutils using `sudo apt-get install python3-distutils` 
+
-1. Create a folder where the virtual environments will live ` $ mkdir ~/python-venvs `
-1. To create a new environment named `test-env` execute `$ python3 -m venv ~/python-envs/test-env`  
-1. To activate the environment execute `$ source ~/python-envs/test-env/bin/activate`
+1. Create a folder where the virtual environments will reside `$ mkdir ~/python-venvs`
+1. To create a new environment named `sample-env` execute `$ python3 -m venv ~/python-envs/sample-env`  
+1. To activate the environment execute `$ source ~/python-envs/sample-env/bin/activate`
+1. Verify pip version is the same as in the __Installing Pip__ section. In case it is not the latest, upgrade to 
+the latest pip version using `pip3 install --upgrade pip` 
-1. To deactivate the environment execute `$ deactivate `
+1. To deactivate the environment execute `$ deactivate`
-1. Follow steps 2-5 in the Mac OS X installation.
+1. Follow the steps in the Mac OS X installation.
-Coming Soon.
+1. Create a folder where the virtual environments will reside `$ md python-venvs`
+1. To create a new environment named `sample-env` execute `$ python3 -m venv python-envs\sample-env`  
+1. To activate the environment execute `$ python-envs\sample-env\Scripts\activate`
+1. Verify pip version is the same as in the __Installing Pip__ section. In case it is not the latest, upgrade to 
+the latest pip version using `pip3 install --upgrade pip`
+1. Install ML-Agents package using `$ pip3 install mlagents`
+1. To deactivate the environment execute `$ deactivate`