Added_logos

[ambivert-sam]

Issue Number

fixes #7

Describe the changes you've made

I have two logo designs of tax calculator in Income-Tax-Calculator Folder both the images are in PNG

Checklist

• [ ] I have added my name in the contributors list at the end of README.md file.
• [ ] My code follows the code style of this project.
• [ ] My change requires a change to the documentation.
• [ ] I have updated the documentation accordingly.
• [ ] I have added tests to cover my changes.
• [ ] All new and existing tests passed.
• [x] The title of my pull request is a short description of the requested changes.
• [ ] Open Source Program names(OPTIONAL: If you participated in any open-source program then please mention the program name here)