Update runtime files

runtime/indent/nginx.vim

@@ -0,0 +1,17 @@
+" Vim indent file
+" Language: nginx.conf
+" Maintainer: Chris Aumann <me@chr4.org>
+" Last Change: Apr 15, 2017
+
+if exists("b:did_indent")
+    finish
+endif
+let b:did_indent = 1
+
+setlocal indentexpr=
+
+" cindent actually works for nginx' simple file structure
+setlocal cindent
+
+" Just make sure that the comments are not reset as defs would be.
+setlocal cinkeys-=0#