Contrib: added vim to README.

contrib/README

diff --git a/contrib/README b/contrib/README
index 094aa52..fec4b20 100644
--- a/contrib/README
+++ b/contrib/README
@@ -13,3 +13,9 @@
 	configuration file format.
 	Two generated full maps for windows-1251 and koi8-r.
 
+
+vim			by Evan Miller
+
+	Syntax highlighting of nginx configuration for vim, to be
+	placed into ~/.vim/.
+