.gitignore in symbiont-ruby-0.6.0 vs .gitignore in symbiont-ruby-0.7.0

@@ -1,10 +1,10 @@
 /.bundle/
 /.yardoc
 /_yardoc/
-/Gemfile.lock
 /coverage/
 /doc/
 /pkg/
 /spec/reports/
 /tmp/
 .rspec_status
+.ruby-version