Issue #3331699: Replace README.txt to README.md and update README.md

added 4 commits

• 5a11053c...378ae3eb - 2 commits from branch project:8.x-1.x
• 1b15e1d3 - Merge branch '8.x-1.x' of https://git.drupalcode.org/project/chain_menu_access...
• 1186215d - Issue #3331699 - Update readme

Compare with previous version

merged