Update README file with instructions of use and fork

[gggodhwani]

[samarthbhargav]

@gggodhwani Can you explain this a bit? Didn't understand it. Maybe an example

[gggodhwani]

Github Docs explains well how we should write a README file for the project.

I generally pick examples of good README from some of the trending projects like these:

1. Twitter Emoji https://github.com/twitter/twemoji
2. ES Entity Resolution https://github.com/YannBrrd/elasticsearch-entity-resolution
3. CKAN https://github.com/ckan/ckan