* Added post voting (partial)

* Fixed jrails
* Added header to comment/index
* Post votes now store the score

app/views/post_votes/create.js.rjs

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+page["#score-for-post-#{@post.id} span"].val(@post.score)

test/unit/post_vote_test.rb

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+require_relative '../test_helper'
+
+class PostVoteTest < ActiveSupport::TestCase
+  setup do
+    user = Factory.create(:user)
+    CurrentUser.user = user
+    CurrentUser.ip_addr = "127.0.0.1"
+    MEMCACHE.flush_all
+    
+    @post = Factory.create(:post)
+  end
+  
+  context "Voting for a post" do
+    should "interpret up as +1 score" do
+      vote = PostVote.create(:post_id => @post.id, :score => "up")
+      assert_equal(1, vote.score)
+    end
+    
+    should "interpret down as -1 score" do
+      vote = PostVote.create(:post_id => @post.id, :score => "down")
+      assert_equal(-1, vote.score)
+    end
+    
+    should "not accept any other scores" do
+      vote = PostVote.create(:post_id => @post.id, :score => "xxx")
+      assert(vote.errors.any?)
+    end
+  end
+end

vendor/plugins/jrails/init.rb

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+$: << File.expand_path("..", __FILE__)
+
+require "lib/jrails"