Update runtime files
diff --git a/runtime/ftplugin/luau.vim b/runtime/ftplugin/luau.vim
new file mode 100644
index 0000000..458d0b0
--- /dev/null
+++ b/runtime/ftplugin/luau.vim
@@ -0,0 +1,14 @@
+" Vim filetype plugin file
+" Language: Luau
+" Maintainer: None yet
+" Last Change: 2023 Apr 30
+
+if exists("b:did_ftplugin")
+ finish
+endif
+
+" Luau is a superset of Lua
+runtime! ftplugin/lua.vim
+
+
+" vim: nowrap sw=2 sts=2 ts=8
diff --git a/runtime/ftplugin/usd.vim b/runtime/ftplugin/usd.vim
new file mode 100644
index 0000000..c795ba5
--- /dev/null
+++ b/runtime/ftplugin/usd.vim
@@ -0,0 +1,18 @@
+" Vim filetype plugin file
+" Language: Pixar Animation's Universal Scene Description format
+" Maintainer: Colin Kennedy <colinvfx@gmail.com>
+" Last Change: 2023 May 9
+
+if exists("b:did_ftplugin")
+ finish
+endif
+
+let s:cpo_save = &cpo
+set cpo&vim
+
+let b:did_ftplugin = 1
+
+setlocal commentstring=#\ %s
+
+let &cpo = s:cpo_save
+unlet s:cpo_save