Merge pull request #44 from bkw/badges

Add badges
update to chef spec 4.1.0
update chef dependency for chefspec 4.1.0
remove deprecated chefspec server require
update chefspec runnner usage to ServerRunner
move data bag creation into chef_run block
add ruby-2.1.3 to travis builds
remove ruby-2.0.0 - is anybody using this?
relax constraint on chef version [ci skip]
Merge pull request #46 from bkw/badges

add gymnasium badge for dependencies
bump to chef spec 4.1.1, see sethvargo/chefspec#504
@sethvargo is awesome!
Merge pull request #45 from bkw/chefspec-4.1.0

update to chefspec 4.1.1
Merge branch 'master' of https://github.com/TelekomLabs/chef-ssh-hardening into ruby-2.13
Revert "remove ruby-2.0.0 - is anybody using this?"

This reverts commit f442ad91e7794a34ec98b7e8cfacd015173828db.
Merge pull request #47 from bkw/ruby-2.13

update travis builds to ruby 2.1.3
supply proper links for the badges