新手问题 capistrano-2.15.5，请问这个是什么问题呢？弄了 n 久啊。
$ cap deploy
/Users/ji/.rvm/gems/ruby-2.0.0-p247/gems/capistrano-2.15.5/bin/cap:3:in `require': cannot load such file -- capistrano/cli (LoadError)
from /Users/ji/.rvm/gems/ruby-2.0.0-p247/gems/capistrano-2.15.5/bin/cap:3:in `<top (required)>'
from /Users/ji/.rvm/gems/ruby-2.0.0-p247/bin/cap:23:in `load'
from /Users/ji/.rvm/gems/ruby-2.0.0-p247/bin/cap:23:in `<main>'
from /Users/ji/.rvm/gems/ruby-2.0.0-p247/bin/ruby_noexec_wrapper:14:in `eval'
from /Users/ji/.rvm/gems/ruby-2.0.0-p247/bin/ruby_noexec_wrapper:14:in `<main>'
https://github.com/wayneeseguin/rvm-capistrano 可能需要这个 gem 吧 另外提醒，capistrano 部署 rvm 有“风险”，反正我尝试了几个小时之后，换成 rbenv 解决问题……我用的是 capistrano v3. 建议切换到 Capistrano v3，同时服务器端使用 rbenv。