Update libbwt, add support for ephemeral token

Author: shesek

README.md

@@ -86,6 +86,9 @@ bwtd.shutdown()
 
 See [`example.js`](example.js) for a more complete example, including connecting to the HTTP API.
 
+The API servers are unauthenticated by default, but
+[authentication can be enabled](https://github.com/bwt-dev/bwt/blob/master/doc/auth.md).
+
 The list of options is available in the [libbwt C FFI documentation](https://github.com/bwt-dev/libbwt#config-options).
 The nodejs wrapper also provides the following additional options:
 

index.js

@@ -96,12 +96,15 @@ class BwtDaemon extends EventEmitter {
       case 'progress:scan':
         this.emit('progress:scan', progress_n, detail_n /*ETA in seconds*/)
         break
+      case 'access_token':
+        this.access_token = detail_s
+        break
       case 'ready:http':
-			  this.http_addr = detail_s
-			  this.http_url = `http://${this.http_addr}/`
-				break
+        this.http_addr = detail_s
+        this.http_url = `http://${this.http_addr}/`
+        break
       case 'ready:electrum':
-			  this.electrum_addr = detail_s
+        this.electrum_addr = detail_s
         break
       case 'ready':
         this.emit('ready')