Description:
    Generate logger file

Example:
    rails generate log_ranger

    This will create:
        - app/models/application_log.rb
        - config/mongoid.yml
        - config/initializers/log_ranger.rb
        - config/initializers/mongo.rb

Additional Gem:
    Add this gem to your Gemfile and run `bundle install`

    gem "grape_logging"
    gem "mongoid"

To use this logger as default logger, add following lines to your init.rb.
  insert_after Grape::Middleware::Formatter, GrapeLogging::Middleware::RequestLogger,
               logger: Logger.new(GrapeLogging::MultiIO.new($log_file, STDERR), formatter: CustomFormatter.new),
               include: [ GrapeLogging::Loggers::Response.new,
                          GrapeLogging::Loggers::FilterParameters.new,
                          GrapeLogging::Loggers::ClientEnv.new,
                          GrapeLogging::Loggers::RequestHeaders.new ]