bugsnag_generator: don't strip the initializer

Stripping removes trailing newlines. Git isn't happy about it.

  --- /dev/null
  +++ b/config/initializers/bugsnag.rb
  @@ -0,0 +1,3 @@
  +Bugsnag.configure do |config|
  +  config.api_key = <key>
  +end
  \ No newline at end of file