Follow Rails file naming convention

Fixes #189

config/environments/development-example.rb

@@ -1,50 +0,0 @@
-Rails.application.configure do
-  # Settings specified here will take precedence over those in config/application.rb.
-
-  # In the development environment your application's code is reloaded on
-  # every request. This slows down response time but is perfect for development
-  # since you don't have to restart the web server when you make code changes.
-  config.cache_classes = false
-
-  # Do not eager load code on boot.
-  config.eager_load = false
-
-  # Show full error reports and disable caching.
-  config.consider_all_requests_local = true
-  config.action_controller.perform_caching = false
-
-  # Print deprecation notices to the Rails logger.
-  config.active_support.deprecation = :log
-
-  config.logger = ActiveSupport::Logger.new(nil)
-
-  # Raise an error on page load if there are pending migrations.
-  config.active_record.migration_error = :page_load
-
-  # Debug mode disables concatenation and preprocessing of assets.
-  # This option may cause significant delays in view rendering with a large
-  # number of complex assets.
-  config.assets.debug = false
-
-  # Adds additional error checking when serving assets at runtime.
-  # Checks for improperly declared sprockets dependencies.
-  # Raises helpful error messages.
-  config.assets.raise_runtime_errors = true
-
-  config.action_view.raise_on_missing_translations = true
-
-  # for finding database optimization
-  config.after_initialize do
-    Bullet.enable = true
-    Bullet.bullet_logger = true
-    Bullet.console = true
-    Bullet.rails_logger = true
-    Bullet.add_footer = true
-    Bullet.unused_eager_loading_enable = false
-  end
-end
-
-# In this mode, any jobs you queue will be run in the same thread, synchronously
-# (that is, MyJob.enqueue runs the job and won't return until it's completed).
-# This makes your application's behavior easier to test
-Que.mode = :sync