Fix all linting errors #71

This project has quite a few linting errors which show up on the editor or when you run the yarn lint command.
Fix all of them. if you will.

Steps to Reproduce

1. Fork scriptified.dev repo
2. Clone it locally
3. Setup project locally using this guide
4. Run yarn lint.

5. You will see a lot of lint warnings with file names & line numbers, with hints to fix them as well.
6. For help/guidance, mention @scriptified/core-team and ask your queries in comments below :)