Renaming 'Sirupsen' to 'sirupsen'

diff --git a/doc.go b/doc.go
index dddd5f8..da67aba 100644
--- a/doc.go
+++ b/doc.go

@@ -7,7 +7,7 @@
   package main
 
   import (
-    log "github.com/Sirupsen/logrus"
+    log "github.com/sirupsen/logrus"
   )
 
   func main() {
@@ -21,6 +21,6 @@
 Output:
   time="2015-09-07T08:48:33Z" level=info msg="A walrus appears" animal=walrus number=1 size=10
 
-For a full guide visit https://github.com/Sirupsen/logrus
+For a full guide visit https://github.com/sirupsen/logrus
 */
 package logrus

diff --git a/examples/basic/basic.go b/examples/basic/basic.go
index a1623ec..b22468d 100644
--- a/examples/basic/basic.go
+++ b/examples/basic/basic.go

@@ -1,7 +1,7 @@
 package main
 
 import (
-	"github.com/Sirupsen/logrus"
+	"github.com/sirupsen/logrus"
 )
 
 var log = logrus.New()

diff --git a/examples/hook/hook.go b/examples/hook/hook.go
index 3187f6d..892b231 100644
--- a/examples/hook/hook.go
+++ b/examples/hook/hook.go

@@ -1,9 +1,6 @@
 package main
 
-import (
-	"github.com/Sirupsen/logrus"
-	"gopkg.in/gemnasium/logrus-airbrake-hook.v2"
-)
+import "github.com/sirupsen/logrus"
 
 var log = logrus.New()
 

diff --git a/hooks/syslog/syslog.go b/hooks/syslog/syslog.go
index a36e200..fef9804 100644
--- a/hooks/syslog/syslog.go
+++ b/hooks/syslog/syslog.go

@@ -4,9 +4,10 @@
 
 import (
 	"fmt"
-	"github.com/Sirupsen/logrus"
 	"log/syslog"
 	"os"
+
+	"github.com/sirupsen/logrus"
 )
 
 // SyslogHook to send logs via syslog.

diff --git a/hooks/syslog/syslog_test.go b/hooks/syslog/syslog_test.go
index 42762dc..89bd1ec 100644
--- a/hooks/syslog/syslog_test.go
+++ b/hooks/syslog/syslog_test.go

@@ -1,9 +1,10 @@
 package logrus_syslog
 
 import (
-	"github.com/Sirupsen/logrus"
 	"log/syslog"
 	"testing"
+
+	"github.com/sirupsen/logrus"
 )
 
 func TestLocalhostAddAndPrint(t *testing.T) {

diff --git a/hooks/test/test.go b/hooks/test/test.go
index 0688125..48c06ab 100644
--- a/hooks/test/test.go
+++ b/hooks/test/test.go

@@ -3,7 +3,7 @@
 import (
 	"io/ioutil"
 
-	"github.com/Sirupsen/logrus"
+	"github.com/sirupsen/logrus"
 )
 
 // test.Hook is a hook designed for dealing with logs in test scenarios.

diff --git a/hooks/test/test_test.go b/hooks/test/test_test.go
index d69455b..3f55cfe 100644
--- a/hooks/test/test_test.go
+++ b/hooks/test/test_test.go

@@ -3,7 +3,7 @@
 import (
 	"testing"
 
-	"github.com/Sirupsen/logrus"
+	"github.com/sirupsen/logrus"
 	"github.com/stretchr/testify/assert"
 )
 

diff --git a/json_formatter.go b/json_formatter.go
index 2ad6dc5..47da504 100644
--- a/json_formatter.go
+++ b/json_formatter.go

@@ -16,7 +16,7 @@
 		switch v := v.(type) {
 		case error:
 			// Otherwise errors are ignored by `encoding/json`
-			// https://github.com/Sirupsen/logrus/issues/137
+			// https://github.com/sirupsen/logrus/issues/137
 			data[k] = v.Error()
 		default:
 			data[k] = v