Change to dep

Author: carlpett

Gopkg.lock

@@ -0,0 +1,4 @@
+[prune]
+  non-go = true
+  go-tests = true
+  unused-packages = true

Gopkg.toml

@@ -7,9 +7,9 @@ import (
 	"os/signal"
 	"syscall"
 
-	log "github.com/Sirupsen/logrus"
 	"github.com/prometheus/client_golang/prometheus"
 	"github.com/prometheus/common/version"
+	log "github.com/sirupsen/logrus"
 )
 
 func init() {