fixed the typo of docs in consistent hash module
release tengine-1.4.6
Merge pull request #50 from yaoweibin/tengine-1.4.6-2

Tengine 1.4.6
add document for upstream keepalive_timeout directive
add document files for upstream keepalive_timeout directive
fix typo, update the index_cn.html, add new information
Merge pull request #51 from jinglong/master

add document files for upstream keepalive_timeout directive
Merge pull request #52 from yaoweibin/update_20130522

fix typo, update the index_cn.html, add new information
fix a configure error in keepalive_timeout.html
Merge pull request #54 from jinglong/master

fix a configure error in keepalive_timeout.html
added the release content for tengine-1.5.0
added docs of trim module
added the docs of http_core module
tiny fix
Merge pull request #55 from yaoweibin/tengine-1.5.0

Tengine 1.5.0
update trim document.
Merge pull request #57 from taoyuanyuan/master

update trim document.
added tengine speech at COSCUP 2013
added the slides of speech on COSCUP 2013
Merge pull request #58 from zhuzhaoyuan/coscup_speech

Coscup speech