.gitignore in fix-0.6.1 vs .gitignore in fix-0.7.0

@@ -1,14 +1,10 @@
 /.bundle/
+/.ruby-version
 /.yardoc
 /Gemfile.lock
 /_yardoc/
 /coverage/
 /doc/
 /pkg/
 /spec/reports/
 /tmp/
-*.bundle
-*.so
-*.o
-*.a
-mkmf.log