Create luponmedia.md (prebid#1922)

Author: adxpremium

dev-docs/bidders/luponmedia.md

@@ -0,0 +1,18 @@
+---
+layout: bidder
+title: LuponMedia
+description: LuponMedia Bidder Adapter
+hide: true
+biddercode: luponmedia
+---
+
+### Note:
+The LuponMedia bidder adapter requires setup and approval from the LuponMedia support team, even for existing LuponMedia publishers. Please contact us for more information.
+
+### Bid Params
+
+{: .table .table-bordered .table-striped }
+| Name   | Scope    | Description              | Example | Type      |
+|--------|----------|--------------------------|---------|-----------|
+| `siteId`  | required | The publisher's unique site ID | `12345`   | `integer` |
+| `keyId` | required | The key ID              | `4o2c4` | `string` |