In order to debug, ruby >= 2.0.0 uses byebug

Author: pitbulk

Gemfile

@@ -6,8 +6,10 @@ group :test do
   if RUBY_VERSION < "1.9"
     gem "nokogiri",   "~> 1.5.0"
     gem "ruby-debug", "~> 0.10.4"
+  elsif RUBY_VERSION < "2.0"
+    gem "debugger", "~> 1.1"
   else
-    gem "debugger",   "~> 1.1"
+    gem "byebug",   "~> 2.1.1"
   end
   gem "shoulda",    "~> 2.11"
   gem "rake",       "~> 10"