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/lua.snippets

@@ -0,0 +1,21 @@
+snippet #!
+	#!/usr/bin/env lua
+	$1
+snippet local
+	local ${1:x} = ${2:1}
+snippet fun
+	function ${1:fname}(${2:...})
+		${3:-- body}
+	end
+snippet for
+	for ${1:i}=${2:1},${3:10} do
+		${4:print(i)}
+	end
+snippet forp
+	for ${1:i},${2:v} in pairs(${3:table_name}) do
+	   ${4:-- body}
+	end
+snippet fori
+	for ${1:i},${2:v} in ipairs(${3:table_name}) do
+	   ${4:-- body}
+	end