Update Setup Steps

[Poriazy]

in case of facing error with python 3.8 and linux:

$ git clone https://github.com/redianmarku/Django-Twitter-Clone.git
$ cd Django-Twitter-Clone
$ python -m venv env
$ source env/bin/activate
$ sudo apt install libpq-dev python-dev
$ pip install psycopg2-binary
$ pip install -r requirements.txt
$ pip install djangoresetframework
$ python mamange.py makemigrations
$ python manage.py migrate 
$ python manage.py runserver