adding small changes, adding example and readme for xmpp

README_XMPP.md

@@ -1,7 +1,7 @@
 # Signpost / Xmpp
 
-Using Signpost to send you messages for Debugging, as Warning, status of Deploy or Critical Errors from
-Services or Server.  
+Using Signpost to send messages for Debugging, as Warning, status of Deploy or Critical Errors from
+Services or Server to an Xmpp-Server.
 
 ## Messages
 
@@ -21,3 +21,6 @@ curl -X POST https://<domain>/api/flow/v1/<uuid>
    -H 'Authorization: Bearer <token>'
    -d '{"message":"<text>"}'
 ```
+
+### PHP
+### Nodejs

packages/server/actions/action.js

@@ -10,14 +10,17 @@ class Action {
 
     /**
      *  
+     *  @param flow object 
+     *  @param data object
      *
      */
     constructor(flow, data) {
         this.flow = flow
         this.data = data
 
-        if (!this.run()) {
-            throw new Error('run method needed')
+        // check if class has a run method
+        if (typeof this.run !== 'function') {
+            throw new Error('missing run method')
         }
     }
 }