Add Droplr plugin

plugins/droplr/droplr.plugin.zsh

+#!/bin/zsh
+
+alias droplr=$ZSH/plugins/droplr/droplr.rb
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plugins/droplr/droplr.rb

+#!/usr/bin/env ruby
+#
+# droplr
+# Fabio Fernandes | http://fabiofl.me
+#
+# Use Droplr from the comand line to upload files and shorten links.
+#
+# Examples:
+# 
+# droplr ./path/to/file/
+# droplr http://example.com
+#
+# This needs Droplr.app to be installed and loged in.
+# Also, Mac only.
+
+if ARGV[0].nil?
+   puts "You need to specify a parameter."
+   exit!(1)
+end
+
+if ARGV[0][%r{^http[|s]://}i]
+	`osascript -e 'tell app "Droplr" to shorten "#{ARGV[0]}"'`
+else
+	`open -ga /Applications/Droplr.app "#{ARGV[0]}"`
+end
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