Merge pull request #5 from biergaizi/master

修正/增强版本号显示
using BOOST_FOREACH instead for()
使用　build tools 设定版本
change excutable to avbot. finnally reflect the project name change
sync with upstream avhttp
remove defer and use boost scope exit
gloox fix
reasign if gloox re open the connection
allow --xmppserver
clone 说明
splict gloox connect and asio op
验证码失误？
clean
clear more
code clean up
daemon fix
sync avhttp
add travis hook that autobuilds
add pop3 stub
add avbot.spec to build rpm tarball