Fix travis

Rakefile

@@ -2,5 +2,13 @@
 # for example lib/tasks/capistrano.rake, and they will automatically be available to Rake.
 
 require_relative 'config/application'
+require "rake"
+require "rspec/core/rake_task"
 
 Rails.application.load_tasks
+
+RSpec::Core::RakeTask.new(:spec) do |t|
+  t.pattern = Dir.glob("spec/**/*_spec.rb")
+  t.rspec_opts = "--format documentation"
+end
+task default: :spec