3 files changed, 117 insertions, 3 deletions

diff --git a/docs/configuration.md b/docs/configuration.md
index c88069e..a76ecb3 100644
--- a/docs/configuration.md
+++ b/docs/configuration.md
@@ -66,6 +66,17 @@ colors:
 # Optional message
 message:
   # url: "https://<my-api-endpoint>" # Can fetch information from an endpoint to override value below.
+  # mapping: # allows to map fields from the remote format to the one expected by Homer
+  #   title: 'id' # use value from field 'id' as title
+  #   content: 'value' # value from field 'value' as content
+  # refreshInterval: 10000 # Optional: time interval to refresh message
+  #
+  # Real example using chucknorris.io for showing Chuck Norris facts as messages:
+  # url: https://api.chucknorris.io/jokes/random
+  # mapping:
+  #   title: 'id'
+  #   content: 'value'
+  # refreshInterval: 10000
   style: "is-warning"
   title: "Optional message!"
   icon: "fa fa-exclamation-triangle"
@@ -81,6 +92,11 @@ links:
   - name: "link 2"
     icon: "fas fa-book"
     url: "https://github.com/bastienwirtz/homer"
+  # this will link to a second homer page that will load config from page2.yml and keep default config values as in config.yml file
+  # see url field and assets/page.yml used in this example:
+  - name: "Second Page"
+    icon: "fas fa-file-alt"
+    url: "#page2"
 
 # Services
 # First level array represents a group.
@@ -88,6 +104,8 @@ links:
 services:
   - name: "Application"
     icon: "fas fa-code-branch"
+    # A path to an image can also be provided. Note that icon take precedence if both icon and logo are set.
+    # logo: "path/to/logo"
     items:
       - name: "Awesome app"
         logo: "assets/tools/sample.png"
@@ -118,9 +136,10 @@ services:
         # background: red # optional color for card to set color directly without custom stylesheet
 ```
 
+
 View [Custom Services](customservices.md) for details about all available custom services (like PiHole) and how to configure them.
 
-If you choose to fetch message information from an endpoint, the output format should be:
+If you choose to fetch message information from an endpoint, the output format should be as follows (or you can [custom map fields as shown in tips-and-tricks](./tips-and-tricks.md#mapping-fields)):
 
 ```json
 {
diff --git a/docs/customservices.md b/docs/customservices.md
index 40f2e3d..4f64ecc 100644
--- a/docs/customservices.md
+++ b/docs/customservices.md
@@ -1,6 +1,8 @@
 # Custom Services
 
-Here is an overview of all custom services that are available within Homer.
+Some service can use a specific a component that provides some extra features by adding a `type` key to the service yaml
+configuration. Available services are in `src/components/`. Here is an overview of all custom services that are available 
+within Homer.
 
 ## PiHole
 
@@ -17,6 +19,7 @@ The following configuration is available for the PiHole service.
         type: "PiHole"
 ```
 
+
 ## OpenWeatherMap
 
 Using the OpenWeatherMap service you can display weather information about a given location.
@@ -35,4 +38,38 @@ items:
 ```
 
 **Remarks:**
-If for some reason your city can't be found by entering the name in the `location` property, you could also try to configure the OWM city ID in the `locationId` property. To retrieve your specific City ID, go to the [OWM website](https://openweathermap.org), search for your city and retrieve the ID from the URL (for example, the City ID of Amsterdam is 2759794).
\ No newline at end of file
+If for some reason your city can't be found by entering the name in the `location` property, you could also try to configure the OWM city ID in the `locationId` property. To retrieve your specific City ID, go to the [OWM website](https://openweathermap.org), search for your city and retrieve the ID from the URL (for example, the City ID of Amsterdam is 2759794).
+
+
+## Medusa
+
+This service displays News (grey), Warning (orange) or Error (red) notifications bubbles from the Medusa application.
+Two lines are needed in the config.yml :
+```
+type: "Medusa"
+apikey: "01234deb70424befb1f4ef6a23456789"
+```
+The url must be the root url of Medusa application.
+The Medusa API key can be found in General configuration > Interface. It is needed to access Medusa API.
+
+
+## Sonarr/Radarr
+
+This service displays Activity (blue), Warning (orange) or Error (red) notifications bubbles from the Radarr/Sonarr application.
+Two lines are needed in the config.yml :
+```
+type: "Radarr" or "Sonarr"
+apikey: "01234deb70424befb1f4ef6a23456789"
+```
+The url must be the root url of Radarr/Sonarr application.
+The Radarr/Sonarr API key can be found in Settings > General. It is needed to access the API.
+
+
+## PaperlessNG
+
+For Paperless you need an API-Key which you have to store at the item in the field `apikey`.
+
+
+## Ping
+
+For Ping you need an API-Key which you have to store at the item in the field `apikey`.
diff --git a/docs/tips-and-tricks.md b/docs/tips-and-tricks.md
index 2719fc5..94167fb 100644
--- a/docs/tips-and-tricks.md
+++ b/docs/tips-and-tricks.md
@@ -113,6 +113,64 @@ docker create \
 
 
 ## Get the news headlines in Homer
+
+### Mapping Fields
+Most times, the url you're getting headlines from follows a different schema than the one expected by Homer.
+
+For example, if you would like to show jokes from ChuckNorris.io, you'll find that the url https://api.chucknorris.io/jokes/random is giving you info like this:
+
+```json
+{
+  "categories": [],
+  "created_at": "2020-01-05 13:42:22.089095",
+  "icon_url": "https://assets.chucknorris.host/img/avatar/chuck-norris.png",
+  "id": "MR2-BnMBR667xSpQBIleUg",
+  "updated_at": "2020-01-05 13:42:22.089095",
+  "url": "https://api.chucknorris.io/jokes/MR2-BnMBR667xSpQBIleUg",
+  "value": "Chuck Norris can quitely sneak up on himself"
+}
+```
+
+but... you need that info to be transformed to something like this:
+
+```json
+{
+  "title": "MR2-BnMBR667xSpQBIleUg",
+  "content": "Chuck Norris can quitely sneak up on himself"
+}
+```
+
+Now, you can do that using the `mapping` field in your `message` configuration. This example would be something like this:
+
+```yml
+message:
+  url: https://api.chucknorris.io/jokes/random
+  mapping:
+    title: 'id'
+    content: 'value'
+```
+
+As you would see, using the ID as a title doesn't seem nice, that's why when a field is empty it would keep the default values, like this:
+
+```yml
+message:
+  url: https://api.chucknorris.io/jokes/random
+  mapping:
+    content: 'value'
+  title: "Chuck Norris Facts!"
+```
+
+and even an error message in case the `url` didn't respond or threw an error:
+
+```yml
+message:
+  url: https://api.chucknorris.io/jokes/random
+  mapping:
+    content: 'value'
+  title: "Chuck Norris Facts!"
+  content: "Message could not be loaded"
+```
+
 #### `by @JamiePhonic`
 
 Homer allows you to set a "message" that will appear at the top of the page, however, you can also supply a `url:`.