安装最新Spree出现error:spree_core requires will_paginate (= 3.0.pre2, runtime) 兰猫

在安装最新的Spree的时候出现以下错误

root@xxxx:/home/xxx/spree# gem install spree

ERROR:  Error installing spree:

spree_core requires will_paginate (= 3.0.pre2, runtime)

解决方法如下:

　　#gem update --system

　　#gem install will_paginate -v=3.0.pre2 --pre

　　#gem install spree