Fix new blog post template.

Rakefile

@@ -114,10 +114,12 @@ task :new_post, :title do |t, args|
     post.puts "---"
     post.puts "layout: post"
     post.puts "title: \"#{title.gsub(/&/,'&')}\""
-    post.puts "date: #{Time.now.strftime('%Y-%m-%d %H:%M:%S %z')}"
+    post.puts "date: #{Time.now.strftime('%Y-%m-%d')}"
     post.puts "comments: true"
-    post.puts "categories: "
+    post.puts "author: FIRST LAST"
+    post.puts "author_twitter: HANDLE_WITHOUT_@"
     post.puts "---"
+    post.puts "image_title: '/images/unspash/FILENAME.jpg'"
   end
 end