refine shadowsocks init scripts
Update README.md

Fix a typo for Debian/Ubuntu sources list file name
Merge pull request #40 from hdid/patch-1

Update README.md
Update README.md

add the installation of centos
add init script
New one
fix service failed
cancel certain user permisson,because run failed
tidy
edit installation of Centos
Merge pull request #42 from Vinna/master

Add installation of Centos
Update README.md
Update README.md
update Readme
WiP: add tunnel mode
WiP: handle both ipv4 and ipv6
WiP: finish the udp part
Update the init script of centos
Fix the pid file in centos init script
fix #44