add sdt get sessions data decoding

README.md

@@ -5,22 +5,22 @@ not sure how far I will take this but messing around with E1.17 ACN protocol
 - rlp
 - sdt
   - vectors    
-    - [x] REL_WRAP
-    - [x] UNREL_WRAP
-    - [ ] CHANNEL_PARAMS
     - [x] JOIN
     - [x] JOIN_REFUSE
     - [x] JOIN_ACCEPT
-    - [ ] LEAVE
     - [x] LEAVING
+    - [ ] NAK
+    - [x] REL_WRAP
+    - [x] UNREL_WRAP
+    - [x] GET_SESSIONS
+    - [ ] SESSIONS
+    - [x] ACK
+    - [ ] CHANNEL_PARAMS
+    - [ ] LEAVE
     - [ ] CONNECT
     - [ ] CONNECT_ACCEPT
     - [ ] CONNECT_REFUSE
     - [ ] DISCONNECT
     - [ ] DISCONNECTING
-    - [x] ACK
-    - [ ] NAK
-    - [ ] GET_SESSIONS
-    - [ ] SESSIONS
 - dmp
 - ddl