Updated Documentation('Instruction to setup pipenv')

Author: Aju100

README.md

@@ -22,15 +22,14 @@ site's theme is based on [Pure Pelican Theme](https://github.com/PurePelicanThem
 
 This will clone the repository on to your system and clone the submodules inside it as well recursively. Additionally, the folder to which it will be cloned to is called `pynepal-website`.
 
-* Set up a virtual env in that folder and activate it
+* Set up a pipenv in that folder and activate it
 
         $ cd <repo>
-        $ virtualenv venv
-        $ source venv/bin/activate
+        $ pipenv shell
 
 * Install the requirements using `pip` from inside the virtual environment
 
-        (venv)$ pip install -r requirements.txt
+        (pythonnepal.github.io)$ pip install -r requirements.txt
 
 * Start the server