Updated Notify_signal (markdown)

Notify_signal.md

@@ -30,12 +30,12 @@ The **{FromPhoneNo}** must be the number associated with your account.
 Valid syntax is as follows:
 * `signal://{user}:{password}@{hostname}/{from_phone}`
 * `signal://{user}:{password}@{hostname}:{port}/{from_phone}`
-* `signal://{user}:{password}@{hostname}/{from_phone}/{to_phone}`
+* `signal://{user}:{password}@{hostname}/{from_phone}/{target}`
-* `signal://{user}:{password}@{hostname}:{port}/{from_phone}/{from_phone}`
+* `signal://{user}:{password}@{hostname}:{port}/{from_phone}/{target}`
 
 You can post in multiple chats by simply chaining them at the end of the URL.
-* `signal://{user}:{password}@{hostname}:{port}/{from_phone}/{to_phone1}/{to_phone2}/{to_phone3}`
+* `signal://{user}:{password}@{hostname}:{port}/{from_phone}/{target1}/{target2}/{target3}`
-* `signals://{user}:{password}@{hostname}:{port}/{from_phone}/{to_phone1}/{to_phone2}/{to_phone3}`
+* `signals://{user}:{password}@{hostname}:{port}/{from_phone}/{target1}/{target2}/{target3}`
 
 ### Parameter Breakdown
 | Variable        | Required | Description
@@ -45,11 +45,43 @@ You can post in multiple chats by simply chaining them at the end of the URL.
 | user        | No       | If you're system is set up to use HTTP-AUTH, you can provide _username_ for authentication to it.
 | password    | No       | If you're system is set up to use HTTP-AUTH, you can provide _password_ for authentication to it.
 | from     |  Yes  | This must be a _From Phone Number_ you've added to the API service.
-| to         | **\*No**   | A phone number you wish to send your notification to.  If one isn't specified, then the `from` is used instead.
+| to         | **\*No**   |A phone number or group id you wish to send your notification to. If one isn't specified, then the `from` is used instead.
 | batch     |  No  | Send multiple specified notifications in a single batch (1 upstream post to the end server).  By default this is set to `no`.
 | status     |  No  | Optionally include a small little ASCII string representing the notification status being sent (inline with it)  by default this is set to `no`.
 
-#### Example
+### Acquiring A Group ID
+Groups can be created in the app, or via the [Signal Rest API Service](https://github.com/bbernhard/signal-cli-rest-api).
+To get a list of available groups and their ids run:
+```bash
+curl -X GET -H "Content-Type: application/json" localhost:9922/v1/groups/+15555551234 | jq
+```
+
+Example output is as follows:
+```
+[
+  {
+    "name": "Test Group",
+    "id": "group.abcdefghijklmnop=",
+    "internal_id": "aabbccdd/eeffgghh=",
+    "members": [
+      "+1555555551234
+      "+16666661234"
+    ],
+      "blocked": false,
+      "pending_invites": [],
+      "pending_requests": [],
+      "invite_link": "",
+      "admins": [
+      "+1555555551234"
+    ]
+  }
+]
+
+The takeaway from the above is the group 
+```
+Example sending a notification to a group: `group.aabbccdd/eeffgghh=` identified by the `id`.
+
+### Example
 Send a Signal Notification (via Signal API):
 ```bash
 # Assuming our {Hostname} is localhost (hosting the bbernhard/signal-cli-rest-api)
@@ -57,12 +89,12 @@ Send a Signal Notification (via Signal API):
 # Assuming our {PhoneNo} - is in the US somewhere making our country code +1
 #                        - identifies as 800-555-1223
 apprise -vv -t "Test Message Title" -b "Test Message Body" \
-   signal://localhost/19005559999/18005551223
+   "signal://localhost/19005559999/18005551223"
 
 # the following would also have worked (spaces, brackets,
 # dashes are accepted in a phone no field):
 apprise -vv -t "Test Message Title" -b "Test Message Body" \
-   signal://localhost/1-(900) 555-9999/1-(800) 555-1223
+   "signal://localhost/1-(900) 555-9999/1-(800) 555-1223"
 ```
 
 Based on my personal experiences, I was able to send a notification to myself by simply doing the following:
@@ -71,9 +103,20 @@ Based on my personal experiences, I was able to send a notification to myself by
 # Assuming our {Port} is 9922
 # Assuming our {FromPhoneNo} is +1 555 555 1234
 apprise -vv -t "Test Message Title" -b "Test Message Body" \
-   signal://localhost:9922/15555551234
+   "signal://localhost:9922/15555551234"
 ```
 
+If you know the Group ID you want to notify, you can idenify it as well on the command line:
+```bash
+# Assuming our {Hostname} is localhost (hosting the bbernhard/signal-cli-rest-api)
+# Assuming our {Port} is 9922
+# Assuming our {FromPhoneNo} is +1 555 555 1234
+# Assuming our {Group} is group.abcdefghijklmnop=
+apprise -vv -t "Group Message:" -b "Hello group members" \
+    "signal://localhost:9922/+1555555551234/group.abcdefghijklmnop="
+```
+
+
 I could even send an attachment without a problem:
 ```bash
 apprise -vv -t -b "test" \