Add text-only stories to fake_data task

For #414

lib/tasks/fake_data.rake

@@ -15,11 +15,18 @@ class FakeDataGenerator
         username: user_name
     end
 
-    @stories_count.times do
+    @stories_count.times do |i|
       user = users[Random.rand(users.length-1)]
       title = Faker::Lorem.sentence(3)
       tag = Tag.find_or_create_by! tag: title.split(' ').first.downcase
-      Story.create! user: user, title: title, url: Faker::Internet.url, tags_a: [tag.tag]
+      if i.even?
+        Story.create! user: user, title: title, url: Faker::Internet.url, tags_a: [tag.tag]
+      else
+        Story.create! user: user,
+          title: title,
+          description: Faker::Lorem.paragraphs(3).join("\n\n"),
+          tags_a: [tag.tag]
+      end
     end
   end
 end