added puts plugin for easily logging from liquid templates to the terminal

plugins/puts.rb

@@ -0,0 +1,32 @@
+# Title: Puts Tag for Jekyll
+# Author: Brandon Mathis http://brandonmathis.com
+# Description: Puts is a liquid tag block which outputs its contents to the terminal
+#
+# Example Usage:
+# Lets say you've assigned some variable you need to test.
+# {% assign noun = "toaster" %}
+#
+# Drop it in a puts block along with a way to identify it in the output.
+# {% puts %}
+# Look out he's got a {{ noun }}.
+# {% endputs %}
+#
+# Outputs:
+# >>> {% puts %} <<<
+# Look out he's got a toaster.
+#
+
+module Jekyll
+  class Puts < Liquid::Block
+    def initialize(tag_name, markup, tokens)
+      super
+    end
+
+    def render(context)
+      puts ">>> {% puts %} <<<"
+      puts super.map(&:strip).join
+    end
+  end
+end
+
+Liquid::Template.register_tag('puts', Jekyll::Puts)