ignore more files
Merge branch 'master' of github.com:ghxiao/city-bench
update README
Merge branch 'master' of github.com:ghxiao/city-bench
Merge branch 'master' of github.com:ghxiao/city-bench
Merge branch 'master' of github.com:ghxiao/city-bench
Merge branch 'master' of github.com:ghxiao/city-bench
ignore ds_store