Update README.md

follow redirects with curl (#33)

git: => https:, https://github.blog/2021-09-01-improving-git-protocol-security-github

tar command compatibility (#31)

Fix breakage when used with the curl (#30)

Support xz, bzip2 and gzip as decompressors (#24)

create funding

update misc-autosync-resources recipes

Max peal patch 1 for mktemp (#23)

remove url-breaking newline (#21)

Use http://rawgit.loltek.net to provide direct static-get downloads

fallback checksum.tar.* to checksum.txt if required

fix missing shellchecks

fix shellcheck SC2164

add shellcheck test to travis-ci