add nip 26: relays list.

26.md

@@ -0,0 +1,29 @@
+NIP-26
+======
+
+Relays List
+-----------
+
+`draft` `optional` `author:fiatjaf`
+
+A special event with kind `10001`, meaning "relay list" is defined as having a list of tags, one for each relay the author uses.
+
+The content is not used.
+
+The tags consist of arrays of 3 elements: the first is the relay URL, the second is the "read" condition -- which if set `"true"` means the client is reading events from that relay --, the third is the "write" condition -- which if set to `"true"` means the user is writing events to that relay.
+
+In the future this NIP will be modified with more fine-grained conditions for writing and reading from relays, based on properties of the filter or of the event respectively, written as strings in a simple language.
+
+Example:
+
+```json
+{
+  "kind": 10001,
+  "tags": [
+    ["wss://alicerelay.com/", "true", "false"],
+    ["wss://bobrelay.com/", "true", "true"],
+    ["wss://carolrelay.com/", "false", "true"],
+  ],
+  "content": "",
+  ...other fields
+```