Update README.md

README.md

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 # web_app
 Web App in Python using Flask for User management.
+
+This App is tested on Ubuntu 14.04.1
+
+
+**1. Web User Creation**
+
+First of all create a normal user e.g. web
+```
+sudo useradd web -m
+sudo passwd web
+sudo vim /etc/sudoers
+
+web    ALL=(ALL) NOPASSWD: ALL
+```
+
+**2. Flask Installation:**
+
+```
+su - web
+sudo apt-get update
+sudo apt-get install python-pip git
+sudo pip install virtualenv
+mkdir flask
+cd flask
+virtualenv venv
+
+. venv/bin/activate
+
+sudo pip install Flask
+sudo pip install https://github.com/mitsuhiko/flask/tarball/master
+
+```
+
+**3. Starting the App**
+```
+git clone https://github.com/gkbijarniya/web_app.git
+cd web_app
+flask -a app run --host=0.0.0.0
+
+and open browser and access 
+http://IP_Address:5000
+```
+
+**4. Create/Modify/Delete Linux users along with Suodoers entry**
+