Remove Zeus and Cucumber references

* Spring is now built in to Rails:
  http://weblog.rubyonrails.org/2014/4/8/Rails-4-1/
* Haven't used Cucumber on a project in over a year
Updgrade Plugins

* Upgrade Vundle to new interface
* Add vim-ruby/vim-ruby
move set relativenumber before set number
remove vim-rspec in favor of vim-dispatch
Update vim configs

* Remove settings for vim-rspec
* Map jj to escape. cause reaching for esc is not productive