Rakefile in fillable-pdf-0.6 vs Rakefile in fillable-pdf-0.7

@@ -1,2 +1,10 @@
 require 'bundler/gem_tasks'
-task default: :spec
+require 'rake/testtask'
+
+Rake::TestTask.new(:test) do |t|
+  t.libs << 'test'
+  t.libs << 'lib'
+  t.test_files = FileList['test/**/*_test.rb']
+end
+
+task default: :test