Generate reposts model/table that stores the repost history.

test/fixtures/reposts.yml

@@ -0,0 +1,11 @@
+# Read about fixtures at http://api.rubyonrails.org/classes/ActiveRecord/FixtureSet.html
+
+one:
+  mentioned: MyString
+  postid: 
+  repostid: 
+
+two:
+  mentioned: MyString
+  postid: 
+  repostid: 

test/models/repost_test.rb

@@ -0,0 +1,7 @@
+require 'test_helper'
+
+class RepostTest < ActiveSupport::TestCase
+  # test "the truth" do
+  #   assert true
+  # end
+end