.travis-gemfile in elephas-4.0.0 vs .travis-gemfile in elephas-4.1.0

@@ -9,5 +9,7 @@
 gemspec
 
 # Testing gems
 gem "rspec", "~> 2.12.0"
 gem "rake", "~> 10.0.3"
+gem "simplecov", ">= 0.7.1"
+gem "coveralls", ">= 0.6.7", require: false
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