update readme for the github.io doc page

README.md

@@ -1,5 +1,5 @@
 # coturn Helm Chart
-<a href="https://github.com/jessebot/coturn-chart/releases"><img src="https://img.shields.io/github/v/release/jessebot/coturn-chart?style=plastic&labelColor=blue&color=green&logo=GitHub&logoColor=white"></a>
+<a href="https://github.com/small-hack/coturn-chart/releases"><img src="https://img.shields.io/github/v/release/small-hack/coturn-chart?style=plastic&labelColor=blue&color=green&logo=GitHub&logoColor=white"></a>
 
 An unofficial [coturn](https://github.com/coturn/coturn) helm chart using the official [coturn docker image](https://hub.docker.com/r/coturn/coturn).
 
@@ -22,7 +22,7 @@ An unofficial [coturn](https://github.com/coturn/coturn) helm chart using the of
 Note that you still need to fill out the [`charts/coturn/values.yaml`](./charts/coturn/values.yaml) (Autogenerated Docs can be found in [`charts/coturn/README.md`](./charts/coturn/README.md)).
 
 ```console
-helm repo add coturn https://jessebot.github.io/coturn-chart/
+helm repo add coturn https://small-hack.github.io/coturn-chart/
 helm install coturn coturn/coturn --values values.yaml
 ```
 
@@ -143,6 +143,64 @@ postgresql:
   enabled: false
 ```
 
+### Bundled MySQL subchart
+We provide optional Bitnami MySQL subchart to deploy an external database. You can use it like this:
+
+```yaml
+mysql:
+  enabled: true
+  auth:
+    # -- username for database, ignored if existingSecret is passed in
+    username: "coturn"
+    # -- password for db, autogenerated if empty & existingSecret empty
+    password: "mycoolpasswordthatisplaintextforsomereason"
+    # -- database to create, ignored if existingSecret is passed in
+    database: "coturn"
+    # -- Use existing secret for password details. 
+    # The secret has to contain the keys mysql-root-password, mysql-replication-password and mysql-password
+    existingSecret: ""
+    # Names of the keys in existing secret to use for MySQL credentials
+    secretKeys:
+      # -- key in exsiting Secret to use for the coturn user
+      username: "username"
+      # -- key in existing Secret to use for coturn user's password
+      password: "password"
+```
+
+You're free to use any other values you find in the [Bitnami mysql helm values](https://github.com/bitnami/charts/tree/main/bitnami/mysql) under the `mysql` parameter in your values.yaml for coturn.
+
+### External MySQL database
+If `externalDatabase.enabled` is set to `true`, and `mysql.enabled` is set to false, you can pass in credentials from an existing mysql database, like this:
+
+```yaml
+externalDatabse:
+  enabled: true
+  # -- Currently postgresql and mysql are supported.
+  type: "mysql"
+  # -- required if externalDatabase.enabled: true and mysql.enabled: false
+  hostname: "mysqlserver"
+  # -- username for database, ignored if existingSecret is passed in
+  username: "coturn"
+  # -- password for database, ignored if existingSecret is passed in
+  password: "coolpasswordfordogs"
+  # -- database to create, ignored if existingSecret is passed in
+  database: "coturn"
+  # -- name of existing Secret to use for mysql credentials
+  existingSecret: ""
+  # Names of the keys in existing secret to use for MySQL credentials
+  secretKeys:
+    # -- key in existing Secret to use for the db user
+    username: ""
+    # -- key in existing Secret to use for db user's password
+    password: ""
+    # -- key in existing Secret to use for the database name
+    database: ""
+    # -- key in existing Secret to use for the db's hostname
+    hostname: ""
+mysql:
+  enabled: false
+```
+
 ## Testing
 
 Source: [Tutorial for turnutils_uclient and Coturn server](https://gist.github.com/cameronelliott/be1e581cb7b28f748e04bcabc249e6b6)