Problems with Travis CI

[stephenreid321]

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https://travis-ci.org/wordsandwriting/lumen/builds/128174471:

$ bundle exec rake test

/home/travis/.rvm/rubies/ruby-2.3.0/bin/ruby -w -I"lib" -I"/home/travis/build/wordsandwriting/lumen/vendor/bundle/ruby/2.3.0/gems/rake-11.1.2/lib" "/home/travis/build/wordsandwriting/lumen/vendor/bundle/ruby/2.3.0/gems/rake-11.1.2/lib/rake/rake_test_loader.rb" "test/accounts_test.rb" 

/home/travis/.rvm/gems/ruby-2.3.0@global/gems/bundler-1.12.2/lib/bundler/runtime.rb:89:in `rescue in block (2 levels) in require': There was an error while trying to load the gem 'dragonfly'. (Bundler::GemRequireError)

Gem Load Error is: uninitialized constant Dragonfly

This just started happening with no obvious relevant change to the code. The test suite runs fine on my local machine. Any ideas? I see a Travis related change was made in https://github.com/markevans/dragonfly/commit/288ab352faee5d1aeb61900504ddb7032b16e41d