Require railtie if rails is defined
Require railtie if rails is defined

This line seems not to be present in the repository, even though gem
release 0.1.1 has it. Most likely it was forgotten to be commited when
the release was done.

    $ gem unpack logger-metadata
    Unpacked gem: '/tmp/logger-metadata-0.1.1'

    $ head lib/logger/metadata.rb
    require 'logger'
    require 'logger/metadata/version'
    require 'logger/metadata/formatter'
    require 'logger/metadata/railtie' if defined?(Rails)

    class Logger
      # Metadata mixin for Ruby Logger

smartlyio/logger-metadata,smartlyio/logger-metadata,smartlyio/logger-metadata