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/java/m.snippet

@@ -0,0 +1,8 @@
+/**
+ * ${7:Method Description}
+ * ${5}
+ * @return ${6}
+ */
+${1:public} ${2:void} ${3:methodName}(${4}) {
+	${8}
+}