.gitignore in berkshelf-4.0.1 vs .gitignore in berkshelf-4.1.0

@@ -2,10 +2,9 @@
 *.rbc
 .bundle
 .config
 .rvmrc
 .yardoc
-/Gemfile.lock
 _yardoc
 /coverage
 /doc/
 /pkg
 /spec/reports