Created Notify_sfr (markdown)

Notify_sfr.md

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+## Société Française du Radiotéléphone (SFR)
+* **Source**: https://nexmo.com/
+* **Icon Support**: No
+* **Message Format**: Text
+* **Message Limit**: 160 Characters per message
+
+### Account Setup
+To use Vonage, you will need to acquire your _API Key_ and _API Secret_. Both of these are accessible via the [Vonage Dashboard](https://dashboard.nexmo.com/getting-started-guide).
+
+The **{FromPhoneNo}** must be a number provided to you through Nexmo
+
+### Syntax
+Valid syntax is as follows:
+* `sfr://{user}:{password}@{space_id}/{PhoneNo}`
+* `sfr://{user}:{password}@{space_id}/{PhoneNo1}/{PhoneNo2}/{PhoneNoN}`
+
+### Parameter Breakdown
+| Variable        | Required | Description
+| --------------- | -------- | -----------
+| user       | Yes      | The user associated with your SFR account.
+| password   | Yes      | The password associated with your SFR account.
+| space_id   | Yes      | The Space ID associated with your SFR account.
+| PhoneNo         | **\*No**   |  The phone number you wish to notify
+
+#### Example
+Send a SFR Notification:
+```bash
+# Assuming our {user} is foo
+# Assuming our {password} is bar
+# Assuming our {space_id} is 1234
+# 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" \
+   sfr://foo:bar@1234/18005551223
+
+# 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" \
+   sfr://foo:bar@1234//1-(800) 555-1223
+```