Makefile

Merge pull request qiniu#219 from qiniu/develop

add comment to exported symbol

Merge pull request qiniu#210 from qiniu/develop

v2.3.5

release v2.3.3

Merge pull request qiniu#200 from tonycai653/master

修复一些bug, 给listbucket2加无限重试的功能，用于列举大量删除文件的情况

Merge pull request qiniu#198 from tonycai653/master

add docs for get and pfop command

Merge pull request qiniu#196 from tonycai653/master

change version