railsサーバを起動しようとしたらmysqlまわりのエラーが出て起動できず。。 $ rails s /Library/Ruby/Gems/2.0.0/gems/mysql2-0.3.16/lib/mysql2.rb:8:in `require': dlopen(/Library/Ruby/Gems/2.0.0/gems/mysql2-0.3.16/lib/mysql2/mysql2.bundle, 9): Library not loaded: /usr/local/lib/libmysqlclient.18.dylib (LoadError) Referenced from: /Library/Ruby/Gems/2.0.0/gems/mysql2-0.3.16/lib/mysql2/mysql2.bundle Reason: image not found - /Library/Ru