Add documentation and EnvironmentFiles information.
Merge pull request #20 from cicku/patch-1

Add documentation and EnvironmentFiles information.
Merge branch 'devel'
Update nginx.pm

It didn't work for me until I edited that condition to match the part of code where ipconfig rule is created.
Merge branch 'patch-1' of github.com:k3a/Monitorix into k3a-patch-1