Update README.md

README.md

 to install you need to setup a virtual enviroment using python3. We use virtualenv.
-virtualenv -p python3.
-then you need to activate the enviroment using the following command: source <envname>/bin/activate
+`virtualenv -p python3`
+then you need to activate the enviroment using the following command
+`source <envname>/bin/activate`
 now we need to install the required libraries from pip
-pip install django djangorestframework django-cors-headers django_extensions psycopg2-binary
+`pip install django djangorestframework django-cors-headers django_extensions psycopg2-binary
+`
 now your enviroment is setup to run and develope.
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