Remove Gemfile from dummy app

Author: Lee Richmond

spec/dummy/Gemfile

@@ -1,3 +1,5 @@
-ENV['BUNDLE_GEMFILE'] ||= File.expand_path('../Gemfile', __dir__)
+# Set up gems listed in the Gemfile.
+ENV['BUNDLE_GEMFILE'] ||= File.expand_path('../../../Gemfile', __dir__)
 
-require 'bundler/setup' # Set up gems listed in the Gemfile.
+require 'bundler/setup' if File.exist?(ENV['BUNDLE_GEMFILE'])
+$LOAD_PATH.unshift File.expand_path('../../../lib', __dir__)