Create djax.md (#1482)

Author: djaxbidder

dev-docs/bidders/djax.md

@@ -0,0 +1,15 @@
+---
+layout: bidder
+title: DJAX
+description: Prebid djax Bidder Adapter
+hide: true
+biddercode: djax
+---
+
+
+### Bid Params
+
+{: .table .table-bordered .table-striped }
+| Name            | Scope    | Description                                                                            | Example                     | Type      |
+|-----------------|----------|----------------------------------------------------------------------------------------|-----------------------------|-----------|
+| `publisherId`   | required | Publisher id associated with DJAX                                                      | `1`                         | `integer` |