Use ENV variables to configure rails app

Also, smtp settings don't have to be configured as long as delivery_method is set to :test, so just remove it.
STMP -> SMTP
・Articleに楽観的排他制御を導入。
schema.rb更新
・共同編集機能実装。
add testing frameworks

ignore noisy warnings

create article model test
change adapter selection algorithm
Added Vagrantfile and Cheffile
Added lodge cookbook
Modified README.md
Added timezone-ii cookbook
Modified README.md
Make email config more fexible

fixes #39
Modified miss
Added nfs config to speed up /vagrant shared folder
Modified to use .env, and enabled NFS for shared directory
Changed gemrc place
Changed from NFS to rsync
Changed to use vagrant-gatling-rsync plugin
Modified README