docs: package author and contributors (#270)
docs: package author and contributors (#270)

**Partially fixes**: #259 

- [x] Check the commit's or even all commits' message styles matches our requested structure.
- [x] Check your code additions will fail neither code linting checks nor unit test.

#### Short description of what this resolves:

Give the main contributor some credits

#### Proposed changes:

- Added main contributors to the package.json

👍 Thank you!

yaniswang/HTMLHint,yaniswang/HTMLHint