.gitignore in yammer-oauth2-0.1.1 vs .gitignore in yammer-oauth2-0.2.0

@@ -9,9 +9,10 @@
 rdoc
 spec/reports
 test/tmp
 test/version_tmp
 tmp
+Gemfile.lock
 
 # YARD artifacts
 .yardoc
 _yardoc
 doc/
\ No newline at end of file