Make ready for Amazon Linux 2

Make ready for Amazon Linux 2 (#9)

* Remove curl and special case for Amazon Linux

* Fix deprecation warning

* Use Amazon Linux 2 in test and fix mistake in readme

v0.1.4

Don't use webtatic repo in amazon linux (#7)

* Don't use webtatic repo in amazon linux

* Use docker for testing

* Update readme

v0.1.3 Remove tig

Merge pull request #6 from tjoelsson/remove_tig

Remove tig from system packages

v0.1.2

Fix deprecation warnings

v0.1.1: Merge pull request #3 from tjoelsson/fix_galaxy_issues

Adjust meta information for galaxy

v0.1.0

Initial commit