update docs

Readme.md

@@ -1,5 +1,5 @@
 # gulp-s3-upload
-__Version 1.4.2__
+__Version 1.4.3__
 
 Use for uploading assets to Amazon S3 servers.
 This helps to make it an easy gulp task.
@@ -23,9 +23,23 @@ __See full details in the [Changelog](docs/changelog.md).__
     var s3 = require('gulp-s3-upload')(config);
 ```
 
+...where config is something like...
+
+```js
+var config = {
+    accessKeyId: "YOURACCESSKEY",
+    accessKeySecret: "YOUACCESSSECRET"
+}
+
+//  ...or...
+
+var config = JSON.parse(fs.readFileSync('private/awsaccess.json'));
+
+```
+
 The optional `config` argument can include any option available (like `region`) available in the [AWS Config Constructor](http://docs.aws.amazon.com/AWSJavaScriptSDK/latest/AWS/Config.html#constructor-property). By default all settings are undefined.
 
-Per AWS best practices, the recommended approach for loading credentials is to use the shared credentials file (`~/.aws/credentials`). You can also set the `aws_access_key_id` and `aws_secret_access_key` environment variables or specify values directly in the gulpfile via the `accessKeyId` and `secretAccessKey` options. If you have multiple profiles configured in your AWS credentials file, you can specify the profile name inline with the call to gulp.
+**Per AWS best practices**, the recommended approach for loading credentials is to use the shared credentials file (`~/.aws/credentials`). You can also set the `aws_access_key_id` and `aws_secret_access_key` environment variables or specify values directly in the gulpfile via the `accessKeyId` and `secretAccessKey` options. If you have multiple profiles configured in your AWS credentials file, you can specify the profile name inline with the call to gulp.
 
 ```sh
 AWS_PROFILE=myprofile gulp

docs/changelog.md

@@ -1,5 +1,12 @@
 # Changelog
 
+## Version 1.4.3
+*  Fix issue [issue #26](http://github.com/clineamb/gulp-s3-upload/issues/23)
+  *  Move things into `s3.headObject` call to prevent mutable variable errors.
+*  Clean up some comments.
+*  Update Readme to clarify `config` hash in the config section.
+
+
 ## Version 1.4.2
 
 * Update file-hashing function with [hasha](http://github.com/sindresorhus/hasha) from a signature change.  Simply pull file buffer instead of promise for simplicity sake.

package.json

@@ -1,6 +1,6 @@
 {
   "name": "gulp-s3-upload",
-  "version": "1.4.2",
+  "version": "1.4.3",
   "description": "A gulp task to asynchronous upload/update assets to an AWS S3 Bucket.",
   "main": "index.js",
   "directories": {