How to use the Virtual Environment

Use all those commands in CMD NOT Powershell

1. pip install virtualenvwrapper-win - Install virtualenvwrapper for windows
2. mkvirtualenv -a path/to/project/ blog - Create new virtual environment called 'blog' and associated to the project path.
3. workon blog - Select the virtual environment.
4. pip install -r requirements.txt - Install all needed packages into the virtual environment.
5. flask run - Run the server.