.gitignore in ladder_drive-0.5.2 vs .gitignore in ladder_drive-0.6.0

@@ -1,10 +1,9 @@
 /.bundle/
 /.yardoc
 /Gemfile.lock
 /_yardoc/
 /coverage/
-/doc/
 /pkg/
 /spec/reports/
 /tmp/
 *.gem
 /work/