update io unit test
update rs  unit test
update rs  unit test
update rsf  unit test
update io unit test
update rsf unit test
add test_env.sh
add test_env.sh
fix rsf unit test bug
fix rsf unit test bug
fix
modify travis
modify travis
fix test_env.sh
fix
fix
Merge pull request #80 from wangtuanjie/feature/addjust_unit_test

Feature/addjust unit test
Merge remote-tracking branch 'qiniu/develop' into feature/update_docs
travil ci