readme: move bugsnag docs

README.md

diff --git a/README.md b/README.md
index 61ba248..512f26e 100644
--- a/README.md
+++ b/README.md
@@ -74,7 +74,6 @@
   "os"
   log "github.com/Sirupsen/logrus"
   "github.com/Sirupsen/logrus/hooks/airbrake"
-  "github.com/Sirupsen/logrus/hooks/bugsnag"
 )
 
 func init() {
@@ -85,11 +84,6 @@
   // an exception tracker. You can create custom hooks, see the Hooks section.
   log.AddHook(airbrake.NewHook("https://example.com", "xyz", "development"))
 
-  // Use the Bugsnag hook to report errors that have Error severity or above to
-  // an exception tracker. You can create custom hooks, see the Hooks section.
-  bugsnagHook, _ = logrus_bugsnag.NewBugsnagHook()
-  log.AddHook(bugsnagHook)
-
   // Output to stderr instead of stdout, could also be a file.
   log.SetOutput(os.Stderr)
 
@@ -204,6 +198,9 @@
   Send errors to remote syslog server.
   Uses standard library `log/syslog` behind the scenes.
 
+* [`github.com/Sirupsen/logrus/hooks/bugsnag`](https://github.com/Sirupsen/logrus/blob/master/hooks/bugsnag/bugsnag.go)
+  Send errors to the Bugsnag exception tracking service.
+
 * [`github.com/nubo/hiprus`](https://github.com/nubo/hiprus)
   Send errors to a channel in hipchat.