deploy configure

/www/
  /current
  /releases
  /shared

1. install rvm
2. install rubies
3. install god
rvm use RUBY_VERSION
rvm gemset create GEMSET_NAME
rvm gemset use GEMSET_NAME
gem install god
rvm wrapper RUBY_VERSION@GEMSET_NAME bootup god
4. install unicorn
gem install unicorn
rvm wrapper RUBY_VERSION@GEMSET_NAME APP_NAME unicorn_rails