.gitignore in datetime-scopes-1.0.0.alpha1 vs .gitignore in datetime-scopes-1.0.0.alpha2

@@ -1,16 +1,6 @@
-/.bundle/
-/.yardoc
-/Gemfile.lock
-/_yardoc/
-/coverage/
-/doc/
-/pkg/
-/spec/reports/
-/tmp/
-*.bundle
-*.so
-*.o
-*.a
-mkmf.log
+/.bundle
+/pkg
+/log/*
+!/log/.gitkeep
 .ruby-version
 .ruby-gemset