Create BinaryToGrayCode.js

[claudlai]

PLEASE INGORE THIS PULL REQUEST !! This is my school assignment, so I didn't mean to make any contribution to this project.

Created the conversion of Binary and Gray Code in JavaScript.

Welcome to JavaScript community

Describe your change:

• [✓ ] Add an algorithm?
• Fix a bug or typo in an existing algorithm?
• Documentation change?

Checklist:

• [✓ ] I have read CONTRIBUTING.md.
• This pull request is all my own work -- I have not plagiarized.
• [✓ ] I know that pull requests will not be merged if they fail the automated tests.
• [✓ ] This PR only changes one algorithm file. To ease review, please open separate PRs for separate algorithms.
• [✓ ] All new JavaScript files are placed inside an existing directory.
• [ ✓] All filenames should use the UpperCamelCase (PascalCase) style. There should be no spaces in filenames.
  Example:UserProfile.js is allowed but userprofile.js,Userprofile.js,user-Profile.js,userProfile.js are not
• All new algorithms have a URL in its comments that points to Wikipedia or other similar explanation.
• If this pull request resolves one or more open issues then the commit message contains Fixes: #{$ISSUE_NO}.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[stale]

Please reopen this issue once you commit the changes requested or make improvements on the code. Thank you for your contributions.