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/snipmate-snippets/ruby/module.snippet

@@ -0,0 +1,14 @@
+module ${1:`Snippet_RubyClassNameFromFilename()`}
+	module ClassMethods
+		${2}
+	end
+
+	module InstanceMethods
+
+	end
+
+	def self.included(receiver)
+		receiver.extend         ClassMethods
+		receiver.send :include, InstanceMethods
+	end
+end