.gitignore in backbone-nested-attributes-0.3.2 vs .gitignore in backbone-nested-attributes-0.4.0

@@ -1,10 +1,9 @@
 *.gem
 *.rbc
 .bundle
 .config
 .yardoc
-Gemfile.lock
 InstalledFiles
 _yardoc
 coverage
 doc/
 lib/bundler/man