Create reklamstore.md (#1205)

ReklamStore Bidder

Author: ReklamStoreIT

dev-docs/bidders/reklamstore.md

@@ -0,0 +1,17 @@
+---
+layout: bidder
+title: ReklamStore
+description: Prebid ReklamStore Bidder Adaptor
+biddercode: reklamstore
+biddercode_longer_than_12: false
+hide: true
+gdpr_supported: true
+media_types: banner
+---
+
+### bid params
+
+{: .table .table-bordered .table-striped }
+| Name       | Scope    | Description                            | Example       | Type     |
+|------------|----------|----------------------------------------|---------------|----------|
+| `regionId`      | required | The placement id provided by ReklamStore | `1234567` | `integer` |