Added Logo

[rcya1]

Checklist

• [X] I have read the Contribution & Best practices Guide and my PR follows them.
• [X] There is a corresponding issue for this pull request.
• [X] My branch is up-to-date with the Upstream master branch.
• [X] The unit tests pass locally with my changes (provide a screenshot or link for test)
• [X] I have added tests that prove my fix is effective or that my feature works
• [X] I have added necessary documentation (if appropriate)

Short description of what this resolves:

This adds in the Meilix Generator logo at the top of the page

Changes proposed in this pull request:

• Adds in a logo

Fixes #306

[tabesin]

Have you checked how it looks with different screen sizes? If you take a logo in this colour maybe you also want to adjust the bar. Otherwise this could be approved and rectified in other issues to be filed.

[rpotter12]

@Ryan10145 increase the size of dropdown menu button or decrease the size of the logo. Extra space there is not looking good.