Update cox.md (prebid#734)

reynold-cox · bretg · commit f9bc3fb359fe · 2018-06-06T16:31:27.000-04:00
diff --git a/dev-docs/bidders/cox.md b/dev-docs/bidders/cox.md
@@ -7,6 +7,7 @@ nav_section: reference
 hide: true
 biddercode: cox
 biddercode_longer_than_12: false
+prebid_1_0_supported : true
 ---
 
 ### bid params
