fix username passwd dbname dbusername
fix Server ==> Servers
add nginx_setup  postgresql_setup  file
add  dbinfo file
passwd "$" ---> "\$"  ENV:SHELL
Merge pull request #16 from rogerluo410/master

clone vm interface
add gem source
Merge remote-tracking branch 'upstream/master'
nokogiri need not uninstall in staging env
user require_relative instead of require
Merge pull request #17 from teddy-hoo/master

fix bugs in weiqi's code
Merge remote-tracking branch 'upstream/master'

Conflicts:
	config/loadinfo.rb
add staging and production deploy
add upgrade task
Merge pull request #18 from GarfieldLinux/master

fix bug
Merge remote-tracking branch 'upstream/master'

Conflicts:
	config/loadinfo.rb