add bucket infomation query
add bucket infomation query
add bucket infomation query
Update bucket-info.markdown
Update bucket-info.markdown
Update bucket-info.markdown
Update bucket-info.markdown
Update bucket-info.markdown
Rename bucket-info.markdown to bucket-stat.markdown
Merge pull request #76 from longshanksmo/develop

add bucket statistic query docs
Update bucket-stat.markdown
Update CHANGELOG.md
Merge pull request #77 from qiniu/develop

Release 6.1.5