Changelog
- e3d4100 Merge branch 'ports' of github.com:jreisinger/checkip into ports
- 881f2c1 Update README.md
- c430e70 active checks start with capital letter
- 13251ca add active checks to Makefile and README
- f4938dc check for open TCP ports (active check!)
- 90e4c97 distinguish between passive and active checks
- 10bc24a minor changes in README.md
- 3c056f7 release only when new tag