Initial article for Tasker integration

Tasker-integration.md

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+It is possible to start shares in Hauk via Tasker, starting from v1.3.
+
+To create a Hauk task, create a task and add a new action. Choose "System" > "Send Intent".
+
+## Starting a single-user share
+
+This action will start a single user share and then immediately open a share UI prompting the user to share the resulting tracking link.
+
+Action: `info.varden.hauk.START_ALONE_THEN_SHARE_VIA`  
+Package: `info.varden.hauk`  
+Class: `info.varden.hauk.global.Receiver`  
+Target: `Broadcast Receiver`
+
+### Extras
+
+Extra     | Type    | Default                | Value
+--------- | ------- | ---------------------- | --------------------
+source    | String  | *Required*             | A human readable ID that identifies the source of the broadcast. The first time you use this broadcast, the attempt will be blocked and the user is prompted to authorize shares to be started from broadcast intents identified by the source you specify here. Subsequent broadcasts with the same ID will either start a sharing session or be silently ignored depending on the user's response to the authorization prompt.
+server    | String  | Last used<sup>1)</sup> | The Hauk backend to connect to
+password  | String  | Last used<sup>1)</sup> | The password for the Hauk backend
+duration  | Integer | Last used<sup>2)</sup> | Duration of the sharing session, in seconds
+interval  | Integer | Last used<sup>3)</sup> | Interval between each submitted location update, in seconds
+adoptable | Boolean | Last used<sup>4)</sup> | `true` if the share should be adoptable by others, `false` otherwise
+
+<sup>1)</sup> Uses the setting that was last used when starting a share from within the Hauk UI.  
+<sup>2)</sup> See 1). Default if never used is 30 seconds.  
+<sup>3)</sup> See 1). Default if never used is 1 second.  
+<sup>4)</sup> See 1). Default if never used is `true` to allow adoption.