README.md in fluent-plugin-ec2-metadata-0.0.9 vs README.md in fluent-plugin-ec2-metadata-0.0.10

@@ -1,11 +1,13 @@
 # fluent-plugin-ec2-metadata
 
 [![Gem Version](https://badge.fury.io/rb/fluent-plugin-ec2-metadata.svg)](http://badge.fury.io/rb/fluent-plugin-ec2-metadata)
 [![Build Status](https://travis-ci.org/takus/fluent-plugin-ec2-metadata.svg?branch=master)](https://travis-ci.org/takus/fluent-plugin-ec2-metadata)
+[![Dependency Status](https://gemnasium.com/takus/fluent-plugin-ec2-metadata.svg)](https://gemnasium.com/takus/fluent-plugin-ec2-metadata)
 [![Test Coverage](https://codeclimate.com/github/takus/fluent-plugin-ec2-metadata/badges/coverage.svg)](https://codeclimate.com/github/takus/fluent-plugin-ec2-metadata/coverage)
 [![Code Climate](https://codeclimate.com/github/takus/fluent-plugin-ec2-metadata/badges/gpa.svg)](https://codeclimate.com/github/takus/fluent-plugin-ec2-metadata)
+[![Codacy Badge](https://api.codacy.com/project/badge/grade/16f6786edb554f1ea7462353808011d6)](https://www.codacy.com/app/takus/fluent-plugin-ec2-metadata)
 
 [Fluentd](http://fluentd.org) plugin to add ec2 metadata fields to a event record
 
 ## Installation
 Use RubyGems:
@@ -27,32 +29,55 @@
         hostname      ${tagset_name}
         instance_id   ${instance_id}
         instance_type ${instance_type}
         az            ${availability_zone}
         vpc_id        ${vpc_id}
+        ami_id        ${image_id}
+        account_id    ${account_id}
       </record>
     </match>
 
 Assume following input is coming:
 
-```js
+```
 foo.bar {"message":"hello ec2!"}
 ```
 
 then output becomes as below (indented):
 
-```js
+```
 i-28b5ee77.foo.bar {
   "hostname"      : "web0001",
   "instance_id"   : "i-28b5ee77",
   "instance_type" : "m1.large",
   "az"            : "us-west-1b",
   "vpc_id"        : "vpc-25dab194",
+  "account_id"    : "123456789",
+  "image_id"      : "ami-123456",
   "message"       : "hello ec2!"
 }
 ```
 
+Or you can use filter version:
+
+    <filter foo.**>
+      type ec2_metadata
+
+      aws_key_id  YOUR_AWS_KEY_ID      
+      aws_sec_key YOUR_AWS_SECRET/KEY
+
+      <record>
+        hostname      ${tagset_name}
+        instance_id   ${instance_id}
+        instance_type ${instance_type}
+        az            ${availability_zone}
+        vpc_id        ${vpc_id}
+        ami_id        ${image_id}
+        account_id    ${account_id}
+      </record>
+    </filter>
+
 ### Placeholders
 
 The following placeholders are always available:
 
 * ${tag} input tag
@@ -62,9 +87,11 @@
 * ${availability_zone} availability zone
 * ${region} region
 * ${mac} MAC address
 * ${vpc_id} vpc id
 * ${subnet_id} subnet id
+* ${account_id} account id
+* ${image_id} ami image id
 
 The followings are available when you define `aws_key_id` and `aws_sec_key`(or define IAM Policy):
 
 * ${tagset_xxx} EC2 tag (e.g. tagset_name is replaced by the value of Key = Name)