Added How to run the application in Readme

[akash-rajak]

Fixes #157

Describe the changes you've made

Added How to run the application in readme

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Test plan (OPTIONAL)

A good test plan should give instructions that someone else can easily follow. How someone can test your code?

Checklist

• [x] I have mentioned related issue number in PR description.
• [ ] I have added screenshots and related demo links of my changes..
• [x] The title of my pull request is a short description of the requested changes.
• [x] My code follows the code style of this project.
• [ ] My change requires a change to the documentation.
• [ ] I have updated the documentation accordingly.
• [ ] Open Source Program names(OPTIONAL: If you participated in any open-source program then please mention the program name here)

[akash-rajak]

@QAZIMAAZARSHAD Added "How to run the application" section in readme.