Add hoe-bundler for generated Gemfile.

--HG--
extra : amend_source : 6e1d70a3ae0322b5e4dbe8497e7e2ccb485c0aee
Fix Rakefile for latest version of Hoe
Don't include example .env settings or logs
Don't dup IOs or Tempfiles while deep-copying
Update for latest versions of Mongrel2 and the mongrel2 gem