do not even try to include debase if ruby < 2.0

Author: valich

Gemfile

@@ -2,7 +2,9 @@ source "http://rubygems.org"
 
 gem "ruby-debug-base", :platforms => [:jruby, :ruby_18, :mingw_18]
 gem "ruby-debug-base19x", ">= 0.11.30.pre4", :platforms => [:ruby_19, :mingw_19]
-gem "debase", ">= 0.2.2.beta12", :platforms => [:ruby_20, :mingw_20, :ruby_21, :mingw_21, :ruby_22, :mingw_22, :ruby_23, :mingw_23, :ruby_24, :mingw_24]
+if RUBY_VERSION && RUBY_VERSION >= "2.0"
+  gem "debase", ">= 0.2.2.beta12", :platforms => [:ruby_20, :mingw_20, :ruby_21, :mingw_21, :ruby_22, :mingw_22, :ruby_23, :mingw_23, :ruby_24, :mingw_24]
+end
 
 gemspec