.gitignore in ro-crate-0.5.1 vs .gitignore in ro-crate-0.5.2

@@ -46,5 +46,7 @@
 # .ruby-version
 # .ruby-gemset
 
 # unless supporting rvm < 1.11.0 or doing something fancy, ignore this:
 .rvmrc
+
+Gemfile.lock