Update runtime files. Add vroom file support.

runtime/indent/vroom.vim

@@ -0,0 +1,21 @@
+" Vim indent file
+" Language:	Vroom (vim testing and executable documentation)
+" Maintainer:	David Barnett (https://github.com/google/vim-ft.vroom)
+" Last Change:	2014 Jul 23
+
+if exists('b:did_indent')
+  finish
+endif
+let b:did_indent = 1
+
+let s:cpo_save = &cpo
+set cpo-=C
+
+
+let b:undo_indent = 'setlocal autoindent<'
+
+setlocal autoindent
+
+
+let &cpo = s:cpo_save
+unlet s:cpo_save