add local installation instructions

README.md

@@ -32,6 +32,22 @@ I have made this into a Jekyll Theme. Checkout the live demo [here](https://onli
 
 Change all the details from one place: ``_data/data.yml``
 
+### Local machine
+
+* Get the repo into your machine 
+```bash
+git clone https://github.com/sharu725/online-cv.git
+```
+* Install required ruby gems
+```bash
+bundle install
+```
+* Serve the site locally
+```bash
+bundle exec jekyll serve
+```
+* Navigate to `http://localhost:4000`
+
 ## To preview/edit localy with docker
 
 ```sh