Rakefile in assignable_values-0.7.1 vs Rakefile in assignable_values-0.7.2

@@ -6,10 +6,15 @@
 
 
 namespace :travis_ci do
 
   desc 'Things to do before Travis CI begins'
-  task :prepare do
+  task :prepare => :slimgems do
+  end
+
+  desc 'Install slimgems'
+  task :slimgems do
+    system('gem install slimgems')
   end
 
 end
 
 namespace :all do