Moved plugins to root directory. I'm ditching the idea of shipping plugins with themes until it's more obviously necessary. This way it's easier to merge and update plugins.

plugins/blockquote.rb

@@ -0,0 +1,74 @@
+#
+# Author: Brandon Mathis
+# A full rewrite based on the work of: Josediaz Gonzalez - https://github.com/josegonzalez/josediazgonzalez.com/blob/master/_plugins/blockquote.rb
+#
+# Outputs a string with a given attribution as a quote
+#
+#   {% blockquote Bobby Willis http://google.com/search?q=pants the search for bobby's pants %}
+#   Wheeee!
+#   {% endblockquote %}
+#   ...
+#   <blockquote>
+#     <p>Wheeee!</p>
+#     <footer>
+#     <strong>Bobby Willis</strong><cite><a href="http://google.com/search?q=pants">The Search For Bobby's Pants</a>
+#   </blockquote>
+#
+require './plugins/titlecase.rb'
+
+module Jekyll
+
+  class Blockquote < Liquid::Block
+    FullCiteWithTitle = /(\S[\S\s]*)\s+(https?:\/\/)(\S+)\s+(.+)/i
+    FullCite = /(\S[\S\s]*)\s+(https?:\/\/)(\S+)/i
+    Author =  /(\S[\S\s]*)/
+
+    def initialize(tag_name, markup, tokens)
+      @by = nil
+      @source = nil
+      @title = nil
+      if markup =~ FullCiteWithTitle
+        @by = $1
+        @source = $2 + $3
+        @title = $4.titlecase
+      elsif markup =~ FullCite
+        @by = $1
+        @source = $2 + $3
+      elsif markup =~ Author
+        @by = $1
+      end
+      super
+    end
+
+    def render(context)
+      output = paragraphize(super.map(&:strip).join)
+      author = "<strong>#{@by.strip}</strong>"
+      if @source
+        url = @source.match(/https?:\/\/(.+)/)[1].split('/')
+        parts = []
+        url.each do |part|
+          if (parts + [part]).join('/').length < 32
+            parts << part
+          end
+        end
+        source = parts.join('/')
+        source << '/&hellip;' unless source == @source
+      end
+      cite = "<cite><a href='#{@source}'>#{(@title || source)}</a></cite>"
+      result = if @by.nil?
+        output
+      elsif !@source.nil?
+        "#{output}<footer>#{author + cite}</footer>"
+      else
+        "#{output}<footer>#{author}</footer>"
+      end
+      "<blockquote>#{result}</blockquote>"
+    end
+
+    def paragraphize(input)
+      "<p>#{input.gsub(/\n\n/, '</p><p>').gsub(/\n/, '<br/>')}</p>"
+    end
+  end
+end
+
+Liquid::Template.register_tag('blockquote', Jekyll::Blockquote)