Merge branch 'master' of github.com:qiniu/developer.qiniu.com
Merge branch 'master' of github.com:BluntBlade/developer.qiniu.com
Merge branch 'master' of github.com:qiniu/developer.qiniu.com
Merge branch 'master' of github.com:qiniu/developer.qiniu.com
修正Ruby SDK文档。
Merge branch 'master' of github.com:qiniu/developer.qiniu.com
Merge branch 'master' of github.com:qiniu/developer.qiniu.com
添加使用技巧。
Merge pull request #144 from BluntBlade/master

合并更新内容。