Updated README.md

[ghost]

Issue Number

ISSUE #152

Describe the changes you've made

Made grammatical changes in line numbers 4, 23, 25, 26, 28 and 51 of the README.md file.

Describe if there is any unusual behaviour of your code(Write NA if there isn't)

NA

Additional context (OPTIONAL)

Test plan (OPTIONAL)

Checklist

• [x] My code follows the code style of this project.
• [x] I have performed a self-review of my own code.
• [x] My change requires a change to the documentation.
• [x] I have updated the documentation accordingly.
• [x] I have commented my code, particularly in hard-to-understand areas.
• [x] My changes generate no new warnings.
• [x] I have added tests that prove my fix is effective or that my feature works.
• [x] The title of my pull request is a short description of the requested changes.