docs: update README

Author: trueChazza

README.md

@@ -37,10 +37,10 @@ environment:
 `WebPushElixir` provides a simple public API `send_notification/2` that accepts 2 arguments:
 
 * `subscription`: is the subscription information received from the client.
-* `message`: your message string.
+* `message`: is a message string.
 
 ```elixir
-subscription = '{"endpoint":"http://localhost:4040/some-push-service","keys":{"p256dh":"BNcRdreALRFXTkOOUHK1EtK2wtaz5Ry4YfYCA_0QTpQtUbVlUls0VJXg7A8u-Ts1XbjhazAkj7I99e8QcYP7DkM=","auth":"tBHItJI5svbpez7KI4CCXg=="}}'
+subscription = '{"endpoint":"https://some-push-service","keys":{"p256dh":"BNcRdreALRFXTkOOUHK1EtK2wtaz5Ry4YfYCA_0QTpQtUbVlUls0VJXg7A8u-Ts1XbjhazAkj7I99e8QcYP7DkM=","auth":"tBHItJI5svbpez7KI4CCXg=="}}'
 message = "Some message"
 
 WebPushElixir.send_notification(subscription, message)

lib/web_push_elixir.ex

@@ -100,8 +100,8 @@ defmodule WebPushElixir do
 
   ## Arguments
 
-  * `subscription` is the subscription information received from the client. Accepted example: `'{"endpoint":"http://localhost:4040/some-push-service","keys":{"p256dh":"BNcRdreALRFXTkOOUHK1EtK2wtaz5Ry4YfYCA_0QTpQtUbVlUls0VJXg7A8u-Ts1XbjhazAkj7I99e8QcYP7DkM=","auth":"tBHItJI5svbpez7KI4CCXg=="}}'`
-  * `message` is a string payload.
+  * `subscription` is the subscription information received from the client. Accepted example: `'{"endpoint":"https://some-push-service","keys":{"p256dh":"BNcRdreALRFXTkOOUHK1EtK2wtaz5Ry4YfYCA_0QTpQtUbVlUls0VJXg7A8u-Ts1XbjhazAkj7I99e8QcYP7DkM=","auth":"tBHItJI5svbpez7KI4CCXg=="}}'`
+  * `message` is a message string.
 
   ## Return value