Update

syntax/modules/cache-purge.vim

@@ -0,0 +1,9 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'nginx') == -1
+  
+" Cache Purge Module <https://github.com/FRiCKLE/ngx_cache_purge>
+" Module adding ability to purge content from FastCGI and proxy caches.
+syn keyword ngxDirectiveThirdParty fastcgi_cache_purge
+syn keyword ngxDirectiveThirdParty proxy_cache_purge
+
+
+endif