Created Notify_sms_manager (markdown)

Notify_sms_manager.md

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+## SMS Manager Notifications
+
+* **Source**: https://smsmanager.cz
+* **Icon Support**: No
+* **Message Format**: Text
+* **Message Limit**: 160 Characters per message
+
+### Account Setup
+Sign up for SMS Manager  [from here](https://smsmanager.cz). You can access your API Key from the management section from your account.
+
+### Syntax
+Valid syntax is as follows:
+* `smsmgr://{apikey}@/{toPhoneNo}`
+* `smsmgr://{apikey}@/{toPhoneNo1}/{toPhoneNo2}/{toPhoneNoN}`
+
+`smsmanager://` can also be used as an alias to `smsmgr://` if you choose.
+
+### Parameter Breakdown
+| Variable        | Required | Description
+| --------------- | -------- | -----------
+| apikey    | Yes      | The API Key associated with your SMS Manager Account.
+| to         | **\*No**   | A phone number and/or group you wish to send your notification to. You can use comma's to separate multiple entries if you wish. This is an alias to `targets`. 
+| from         | **\*No**   | This requires approval from the Administrator and provides a `sender` option in the payload.   It can not exceed 11 characters according to the documentation.  You may also use `?sender=` to set this same value.
+| batch     |  No  | Send multiple specified notifications in a single batch (1 upstream post to the end server).  By default this is set to `no`.
+| gateway     |  No  | SMS Manager supports the following gateway settings: `high`, `economy`, `low`, and `direct`.  By default this is set to `high` if not otherwise specified.
+
+#### Example
+Send a SMS Manager Message:
+```bash
+# Assuming our {apikey} is hard-to-guess
+# Assuming our {PhoneNo} we wish to notify is +134-555-1223
+apprise -vv -t "Test Message Title" -b "Test Message Body" \
+   smsmgr://hard-to-guess@+134-555-1223
+```