cleanup and module support (#77)

* cleanup and module support

example_test.go

@@ -1,19 +1,17 @@
-package lumberjack_test
+package lumberjack
 
 import (
 	"log"
-
-	"gopkg.in/natefinch/lumberjack.v2"
 )
 
 // To use lumberjack with the standard library's log package, just pass it into
 // the SetOutput function when your application starts.
 func Example() {
-	log.SetOutput(&lumberjack.Logger{
+	log.SetOutput(&Logger{
 		Filename:   "/var/log/myapp/foo.log",
 		MaxSize:    500, // megabytes
 		MaxBackups: 3,
-		MaxAge:     28, // days
+		MaxAge:     28,   // days
 		Compress:   true, // disabled by default
 	})
 }