.gitignore in revs-utils-2.1.18 vs .gitignore in revs-utils-2.1.19

@@ -1,11 +1,12 @@
+Gemfile.lock
 .rvmrc
 *.gem
 .DS_Store
 .bundle
 doc/*
 log/*
 pkg/*
 tags
 tmp
 coverage
-.yardoc/*
\ No newline at end of file
+.yardoc/*