change upper case S in sirupsen to lower case to avoid build error

actions/update.go

@@ -4,7 +4,7 @@ import (
 	"math/rand"
 	"time"
 
-	log "github.com/Sirupsen/logrus"
+	log "github.com/sirupsen/logrus"
 	"github.com/v2tec/watchtower/container"
 )
 

container/client.go

@@ -5,7 +5,7 @@ import (
 	"io/ioutil"
 	"time"
 
-	log "github.com/Sirupsen/logrus"
+	log "github.com/sirupsen/logrus"
 	"github.com/docker/docker/api/types"
 	"github.com/docker/docker/api/types/network"
 	dockerclient "github.com/docker/docker/client"

container/trust.go

@@ -5,7 +5,7 @@ import (
 	"os"
 	"strings"
 
-	log "github.com/Sirupsen/logrus"
+	log "github.com/sirupsen/logrus"
 	"github.com/docker/docker/api/types"
 	"github.com/docker/docker/api/types/reference"
 	"github.com/docker/docker/cli/command"

glide.yaml

@@ -1,6 +1,6 @@
 package: github.com/v2tec/watchtower
 import:
-- package: github.com/Sirupsen/logrus
+- package: github.com/sirupsen/logrus
   version: ~0.11.x
 - package: github.com/docker/docker
   version: ~1.13.x

main.go

@@ -8,7 +8,7 @@ import (
 
 	"strconv"
 
-	log "github.com/Sirupsen/logrus"
+	log "github.com/sirupsen/logrus"
 	"github.com/robfig/cron"
 	"github.com/urfave/cli"
 	"github.com/v2tec/watchtower/actions"

notifications/email.go

@@ -9,7 +9,7 @@ import (
 
 	"strconv"
 
-	log "github.com/Sirupsen/logrus"
+	log "github.com/sirupsen/logrus"
 	"github.com/urfave/cli"
 )
 

notifications/notifier.go

@@ -1,7 +1,7 @@
 package notifications
 
 import (
-	log "github.com/Sirupsen/logrus"
+	log "github.com/sirupsen/logrus"
 	"github.com/urfave/cli"
 )