Updated all plugins that are non-forked. Added some new plugins.

Added update_plugins.py which can fetch new plugins from GitHub.

New plugins added: zencoding, vim-indent-object, taglist, nginx.vim

sources_non_forked/vim-snippets/snippets/textile.snippets

@@ -0,0 +1,30 @@
+# Jekyll post header
+snippet header
+	---
+	title: ${1:title}
+	layout: post
+	date: ${2:date} ${3:hour:minute:second} -05:00
+	---
+
+# Image
+snippet img
+	!${1:url}(${2:title}):${3:link}!
+
+# Table
+snippet |
+	|${1}|${2}
+
+# Link
+snippet link
+	"${1:link text}":${2:url}
+
+# Acronym
+snippet (
+	(${1:Expand acronym})${2}
+
+# Footnote
+snippet fn
+	[${1:ref number}] ${3}
+
+	fn$1. ${2:footnote}
+