Prep repo for anticipated PR to list of awesome lists

[machawk1]

awesome-web-archiving just went through the procedure of meeting the conditions for inclusion in https://github.com/sindresorhus/awesome. Some of these conditions are easily met and revealed by awesome-line but cannot be PR'd, e.g., adding repo tags.

The output of the linter using current master (8a19a91):

% awesome-lint
✖ Linting

  README.md:1:1
  ✖   1:1  Headings should use atx                                      remark-lint:heading-style
  ✖   1:1  Missing Awesome badge after the main heading                 remark-lint:awesome-badge
  ✖   1:1  Git repository must be at least 30 days old                  remark-lint:awesome-git-repo-age
  ✖   1:1  The repository should have "awesome" as a GitHub topic       remark-lint:awesome-github
  ✖   1:1  The repository should have "awesome-list" as a GitHub topic  remark-lint:awesome-github
  ✖  24:1  Multiple Table of Contents lists found                       remark-lint:awesome-toc

  6 errors

A condition of awesome-archive-tools being added to awesome is that it be 30 days old (more info), so no rush, but it might be good to progressively keep the repo in check in anticipation.

Setting up a PR/commit hook to auto-lint might also facilitate this but again, is an admin task.