Spec Fails Randomly on Ruby 1.9.3 with Rails 3.2

[fny]

Oy...

Both Travis and I have had ./spec/figaro/application_spec.rb:173 fail from time to time when running the suite with Ruby 1.9.3 and the Rails 3.2 gemfile:

$ export BUNDLE_GEMFILE=$PWD/gemfiles/rails32.gemfile
$ bundle install
$ bundle exec rspec
...

Failures:

  1) Figaro::Application#configuration follows a changing default path
     Failure/Error: expect {
       expected result to have initially been {"foo"=>"bar"}, but was {}
     # ./spec/figaro/application_spec.rb:173:in `block (3 levels) in <module:Figaro>'

Finished in 24.69 seconds (files took 0.40703 seconds to load)
98 examples, 1 failure

I've been triggering the job on Travis by making changes to the README alone:

• Failure: https://travis-ci.org/laserlemon/figaro/jobs/61971453
• Success: https://travis-ci.org/laserlemon/figaro/builds/64125093

This discovered while trying to resolve #194.