vim rails

https://ruby-china.org/topics/4478/
https://github.com/tpope/vim-rails

:R ,:A

* Current file	Alternate file	Related file
* model	unit test	schema definition
* controller (in method)	functional test	template (view)
* template (view)	functional test	controller (jump to method)
* migration	previous migration	next migration
* config/database.yml	config/routes.rb	config/environments/*.rb