Update docs

docs/integrating_with_existing_webapp.md

@@ -50,6 +50,13 @@ The structure of the oidc-sample-app we are configuring would be as follows:
       ```
    These properties are required for the OIDC SDK to communicate with Asgardeo.
 
+    ```
+    If you have a multi page application and want to redirect users to a specific page(eg:myApp.jsp) after successful 
+    authentication you can add the following property to the oidc-sample-app.properties file.
+
+    homePage=myApp.jsp
+   ```
+
 3. Next, we need to find and set JKS properties required for IS server communication.  For that, create a file named jks
    .properties in the resources directory. The content of the jks.properties file should be similar to:
 

io.asgardeo.tomcat.oidc.sample/src/main/resources/configuration-catalog.md

@@ -177,3 +177,17 @@ indexPage=/oidc-sample-app/index.html
 ```
 errorPage=/error.jsp
 ```
+
+### Home Page
+
+**Property Name:** `homePage`
+
+**Description:** This may denote the URI for the home page of the webapp. This parameter can be configured to specify 
+the page that the user would always be redirected to, after successful authentication.
+
+
+**Sample:**
+
+```
+homePage=home.jsp
+```