A bug fix release thanks to @Nyoroon.
Changelog
8f38f94 Merge pull request #18 from Nyoroon/patch-1
b1f016d Update exporter.go
25dd7b3 Fix exporter metrics
3e50283 Remove space before dot.
e2df39c Add Grafana dashboard link to README.md
fd58e84 Add missing metrics to Exporter.Describe()
Docker images
docker pull hipages/php-fpm_exporter:0.4.1
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