Fix Rails version comparison

As introduced in the actual code in 0a443aa, this updates the test suite
to match so we don't have failing test cases.

spec/deface/environment_spec.rb

@@ -127,7 +127,7 @@ module Deface
         end
 
         it "should add paths to watchable_dir when running Rails 3.2" do
-          if Rails.version[0..2] == '3.2'
+          if Rails.version[0..2] >= '3.2'
             Rails.application.config.deface.overrides.send(:enumerate_and_load, ["app/gold"], root)
             expect(Rails.application.config.watchable_dirs).to eq({"/some/path/app/gold" => [:rb, :deface] })
           end

spec/spec_helper.rb

@@ -63,7 +63,7 @@ module ActionView::CompiledTemplates
     allow(Rails.application.config).to receive(:deface).and_return ActiveSupport::OrderedOptions.new
     Rails.application.config.deface.enabled = true
 
-    if Rails.version[0..2] == '3.2'
+    if Rails.version[0..2] >= '3.2'
       allow(Rails.application.config).to receive(:watchable_dirs).and_return({})
     end