Removed subject param + Added options param

index.js

@@ -12,11 +12,11 @@ const resolve = async name => {
   }
 }
 
-const send = (topic, subject, message) =>
-  sns.publish({ TopicArn: topic, Subject: subject, Message: message }).promise()
+const send = (topic, message, options) =>
+  sns.publish({ TopicArn: topic, Message: message, ...options }).promise()
 
-export default async (channel, subject, payload = {}) => {
+export default async (channel, payload = {}, options = {}) => {
   const topic = await resolve(channel)
   const message = JSON.stringify(payload)
-  return send(topic, subject, message)
+  return send(topic, message, options)
 }

readme.md

@@ -16,32 +16,32 @@ $ npm install @nutshelllab/sns-messenger
 const send = require('sns-messenger');
 
 (async () => {
-  await send('my-topic', 'subject', { foo: 'bar' });
+  await send('my-topic', { foo: 'bar' }, { Subject: 'foobar' });
 })
 ```
 
 
 ## API
 
-### snsMessenger(topic, subject, payload)
+### snsMessenger(topic, payload, options)
 
 #### topic
 
 Type: `string`
 
 SNS topic to send message
 
-#### subject
+##### payload
 
-Type: `string`
+Type: `Object`
 
-Message subject
+Message payload
 
-##### payload
+##### options
 
 Type: `Object`
 
-Message payload
+Extra AWS SNS parameters, see [AWSJavaScriptSDK documentation](https://docs.aws.amazon.com/AWSJavaScriptSDK/latest/AWS/SNS.html#publish-property)
 
 
 ## License