- add images for web installation

Webapp_Installation.md

@@ -12,13 +12,18 @@ sudo systemctl restart tomcat.service
 open in browser:\
 http://localhost:8080/52n-sos-webapp/
 
-
+![image alt text](images/landing_page.png "landing page")
 
 Installations-Wizard starten und Schritt für Schritt folgen:
-1. http://localhost:8080/52n-sos-webapp/install/index -> 'start' drücken
+1. http://localhost:8080/52n-sos-webapp/install/index -> 'start' drücken:
+![image alt text](images/wizard_start.png "wizard start")
 2. http://localhost:8080/52n-sos-webapp/install/datasource -> Datenbank, DB-Schema, DB user auswählen
+![image alt text](images/wizard_datasource.png "wizard datasource")
 3. http://winnetou.geolba.ac.at:8080/52n-sos-webapp/install/settings -> Metadaten ausfüllen
-4. Webpackend Admin User anlegen (credentials)
+![image alt text](images/wizard_settings.png "wizard settings")
+![image alt text](images/wizard_settings2.png "wizard settings")
+4. Webpackend Admin User anlegen (credentials merken für Web-Backend)
+![image alt text](images/wizard_admin.png "wizard admin")
 
 ## InsertObservation, InsertSensor, InsertFeatureOfInterest Requests freischalten: