Update runtime files

runtime/indent/ps1.vim

@@ -0,0 +1,17 @@
+" Vim indent file
+" Language:    Windows PowerShell
+" URL:         https://github.com/PProvost/vim-ps1
+" Last Change: 2017 Oct 19
+
+" Only load this indent file when no other was loaded.
+if exists("b:did_indent")
+	finish
+endif
+let b:did_indent = 1
+
+" smartindent is good enough for powershell
+setlocal smartindent
+" disable the indent removal for # marks
+inoremap <buffer> # X#
+
+let b:undo_indent = "setl si<"