update code format
Merge pull request #85 from wangtuanjie/fix/fix_code_format

update code format
增加私有资源fop测试案例
增加私有资源fop测试案例
修正getpolicy生成token的bug
Merge pull request #87 from wangtuanjie/fix/getPolicy_make_token_bug

修正getpolicy生成token的bug
Merge pull request #86 from wangtuanjie/feature/add_token_fop_test_case

Feature/add token fop test case
Update CHANGELOG.md
Merge pull request #88 from qiniu/develop

Release v6.0.2